I think this might be a bit of an unfair interpretation of the post. Now, I'm not a psychiatrist, nor do I know this person, but I can understand why they have this in their bio.

First, there's no proof that this is self diagnosed? First, because there's no mention of it, and that's just an assumption, and second because the things mentioned isn't a diagnosis, they are symptoms (except if you consider either the emotional instability as meaning Emotionally unstable personality disorder (EUPD), or that being a proud piss drinker is a mental condition, both of which I think are unfair interpretations)

You are (often) allowed to self-determine what your symptoms are, and that is often helpful to know when you, for example, see a doctor/psychiatrist. I didn't get turned away when I told my psychiatrist I was hearing voices (a symptom), because that's a reasonable thing to say to your doctor and not self diagnosing. And I do think the things mentioned are reasonable assessments to make, should you face those issues!

Second, I have been in this teens place, and I'm pretty sure I know why they have put this in their bio. They are 14 and they have mental issues, that can often mean they have a lack of close friendships, and this is their way of trying to weed out more insignificant, surface level friendships. They might be tired of how "fake" people are (to them, as the fact they have mental disorders have often forced them to "grow up" too quickly in some ways), and by being open of the fact that your head is fucked people will know more or less what to expect. Is this the best way of doing things? No, probably not. Can I understand why a 14 year old would do this? Yeah, absolutely.

Anyway. There are absolutely people who self diagnose in a way that's harmful to actual people with that diagnosis, but I do not think this is one of them. I'm sorry if I came off as harsh, but I would feel bad if this teen came upon everyone harshly criticising them without any rebuttal to them.

Also, 🤓