1. It is their blog, and they probably assume their audience is educated in what schizoid means or is capable of looking it up.
2. Schizoid does not colloquially refer to schizophrenia, and schizophrenia is not a pejorative for "crazy," these are both real and distinct (but related) disorders that do not require anyone talking about them to dichotomize them from what you might assume people misconstrue their false definitions as.
Also, it's not an "extreme form of introversion" - it's much more than that, and putting it that way minimizes the serious nature of the disorder.
It often does colloquially refer to schizophrenia, I've heard people use the word this way for as long as I can remember. General purpose English dictionaries document this colloquial meaning, I checked several to be sure:
"(archaic) schizophrenic" https://en.wiktionary.org/wiki/schizoid
"characterized by, resulting from, tending toward, or suggestive of schizophrenia" https://www.merriam-webster.com/dictionary/schizoid
"suffering from or behaving as if suffering from schizophrenia" https://dictionary.cambridge.org/dictionary/english/schizoid
"Informal. of or relating to schizophrenia or to multiple personality." https://www.dictionary.com/browse/schizoid
"Someone who is schizoid has schizophrenia" https://www.collinsdictionary.com/dictionary/english/schizoi...
This seems to also coincide with other literature that describes those with SPD as being among the least likely to seek treatment.
For example, here's a quora where someone with both talks about it: https://www.quora.com/What-is-the-difference-between-ADHD-an...
Or if you prefer a more 'scientific' source, here's one examining the comorbidity of ADHD and certain disorders, among which Schizoid Personality Disorder is one: https://www.elsevier.es/en-revista-revista-psiquiatria-salud...
They find a correlation, yes, but they are certainly not one and the same.
Lance Armstrong when he is biking and Lance Armstrong when he is recovering are not the same either. But Lance can take drugs to get more of the biking time and less of the recovering time. This is how SPD and ADHD work. ADHD is just a medicated false mask that a schizoid person can maintain for longer periods of time than usual, without episodes of hermitude to recharge. They're doping.
Failure to maintain the mask looks like a breakdown in attention/focus. People do long, focused work because of the expectations of others. Schizoids don't experience that, but instead basically run on obsession. They stop working when that fizzles out. On pills, though, they can work forever.
The 'scientific' people serve the people making the pills and nobody else. They rename everything every few years to sell more pills. If you want a proper take on SPD, look up Millon and his subtypes. Most of the "knowledge" of conditions in the zeitgeist comes from prescription drug commercials.
Whether something is a "disorder" or not is somewhat subjective and opinionated, for sure. But as someone diagnosed with ADHD, I often find that the expectations of modern society can be debilitating. Whether the disorder lies in me or in an unaccommodating society is an interesting question, but it is a separate one.
SPD has the worst outcomes of anything in the DSM. Only someone with SPD could possibly ever see it as the non-broken state, or as not a disorder. You're exactly the type of person I'm talking about. Do you see your vocabulary? Please contact me! I'm a philosopher working on a new model and could really use your point of data.
* aloof
* lethargic
* barren (intellectually)
* flat
* complacent or lifeless
None of these reflect ADHD, which is a dysregulation disorder resulting in the inability to form socially expected task-reward feedback loops. This means forgetting to do small chores once they leave one's sight even under the strong desire to do those chores, having strong emotional responses, needing higher levels of stimulation, and strong sense of impulse. None of ADHD has anything to do with whether or not one is displaying apathy or lack of interest in engagement broadly.
SPD is not a disorder of obsession. You might be thinking of the related-but-very-different Schizotypal, whose strange beliefs, sensory disruptions, and emotional impropriety I can see as potentially looking like ADHD.
How do ADHD people act when their attention breaks? It's in the same ways Millon described. If you look at a schizoid person you can say that's the person and they have a masked state. Or you can see them as an ADHD person that has a checked-out state. But you're describing the same condition and the same person.
The ADHD approach is to medicate the patient so they can maintain the masked state for more of their waking hours. And avoid that terrible checked-out state! Except that's their real, schizoid personality. It's just less socially acceptable than the mask.
I didn't say it was a disorder of obsession. That's just their only tool for doing focused work if they don't have pills. If anything they struggle with maintaining obsessions. I'm familiar with schizotypal PD too and not accidentally talking about something else.
This also doesn't explain sensitivity to rejection or impulsive behavior typical of ADHD.
The frustration and distress are both there in SPD too.
Schizoids are indifferent to praise or criticism. Do you see how that's the opposite of sensitivity to rejection? Do you see how the schizoid's listlessness is the opposite of ADHD's impulsiveness? The mask is a compensatory state, like the narcissist's super-confident persona.
Knock it off.
The major diff. iirc was no comorbidity in the case of HKD. If you were depressed or anxious you couldn't also have ADHD whereas in America we can just top up amphetamines with benzos and treat them both.
Make of that what you will $$.
I agree with a general skepticism of the pharmaceutical industry. I disagree that all of neurology and pharmacology have been completely subsumed by that industry. It is not entirely free of it either, but there is more nuance here than you seem to be allowing.
If you are at all interested in testing your belief, a highly accessible discussion can be found here: https://www.alieward.com/ologies/adhd
The best example IMO of a cured narcissist is Larry Lawton, who faced a long period of isolation in prison. He's on Youtube.
I don't think it is so much that the brain needs to be tweaked, but that experiencing self, other, and world in a different ways can transform those in a way that does not require ongoing medication.
DSM-5 criteria: