This logic doesn't make sense though. What does "learning you don't suck" mean? You still do "suck" but whatever definition was being used at the time. You still didn't do your homework or stay calm in class, that actually happened. It had consequences.

The only way it does make sense is if you think the consequences should be different because some doctor give it a name. But then you say nobody should have been treated that way regardless of the diagnoses. If the diagnoses doesn't matter why does it matter?

As someone who definitely has dealt with all this for my entire life I've found it much easier to just focus on behavior and consequences and alternatives. Trying to place it all in a moral/medical framework is a black hole. If your actions hurt others or otherwise have negative results you have to address that.