You created a "previous proposition" where there wasn't one, by not reading my words in context as a reply the parent post (that described a specific scenario wherein the writer's friends were telling him to stop taking the Adderall that was successfully treating his ADHD symptoms) and instead inventing a completely different context for my words.

In the U.S. at least, Adderall is best prescribed by a psychiatrist, and while there are many general practitioners who will write you a script for Adderall without referring you to a psychiatrist, they're not following what's considered to be best practice. The same doctor would be considered remiss if they didn't refer their patient with heart disease symptoms to a cardiologist. Adderall is a stimulant that can be addictive if used incorrectly, and ADHD is not understood well enough to know that it is best treated by Adderall alone.

While neuroscientists, pharmacists, etc. may be able to tell you details about ADHD or Adderall, they aren't generally licensed to write prescriptions for Adderall in the U.S., and shouldn't be telling you start, stop, or change your Adderall dosage without consulting with your prescribing doctor first.