I didn't watch your linked video, but I definitely agreed with your post. As someone who has also been highly miserable (aka clinically depressed) in the past, various sentiments along the line of "come on, life is great, why can't you appreciate it?" and "that's no so bad, suck it up" most definitely did NOT help me overcome my depression.
Which makes me wonder: if the purpose of this post is to belittle "miserable" people, well I guess it succeeds, but then that seems a pretty miserable thing to do in the first place. If the purpose is to ironically remind folks that there are easy things you can do to not be miserable, I don't think it's doing it in a particularly effective way.
OTOH, there is a CBT angle here. That is, a depressed person may find relief in working to recognize and change the behaviors and thinking that supports those behaviors.
I do think there's a good point here that these patterns are self-reinforcing, and that there can be a kind of counterintuitive pleasure in really getting down into the muck and living there. See also Notes from Underground. But the snide and aggressive tone here is really bizarre.
At least I would say I can recognize some patterns both in my past self and also in several people I am familiar with much clearer after reading it. I don't think the author in any way wanted them to get "pilloried" and "feel bad". That's definitely not the intention.
As someone who is still in school and struggles with emotion/time management/procrastination, I was particularly hit by "focus on goals that are after which you wish to achieve." People around me have pointed this out to me, but it was only until recently did I realize how serious it was.
I think that my impulsive nature and addiction to novelty fuel this problem. Even browsing Hacker News is a manifestation of this. HN always has some cool idea that I could be studying or hacking on when I have free time. But I spend too much time thinking about possibilities than getting done what's right in front of me, because I'm addicted to novelty. I especially neglect school work, which isn't boring at all and rather fascinating and useful, and instead try to find weird things to explore. My huge queue on Pocket is one of many testaments to this. The result is poor, and I feel miserable and disappointed in myself.
Of course, as the video touches upon, modern technology (social media, apps, even internet pornography) exploits humans' desire for novelty (though as previously explained, I think I'm far more vulnerable than average). The video helped me see the connection between my habit and this tendency.
there is a.. loosely similar CGP Grey video, which approaches the matter in a much more rational context [1]
for anyone suffering, i emplore you to not read this and watch this instead;
[1] - https://youtube.com/watch?v=LO1mTELoj6o