The biggest quarrel I have with it is that even if you get clinically tested, at least in the cases where I asked friends who got tested, they did not even try to rule out other causes, like repressed childhood trauma/cPTSD. People might end up on potentially lifelong medication, where other treatment options and recovery may be available.

see e.g. https://www.nature.com/articles/d41586-020-00922-8 , https://www.healthline.com/health/adhd/adhd-linked-to-trauma