because it makes people feel special to say they are neurodivergent. it's a neat label to have for many folks.

it doesn't make them feel special to say they are lazy entitled jerks... which is usually the behaviour they are reporting on that they claim makes them neurodivergent.

and if you look at the neurodivergent communities on here... a lot of the posts are them basically claiming they have super powers.

it's the same psychology behind horoscopes, new age religions, flat earthers, etc. people really really really want to feel special and different and superior (or persecuted/victimhood) to 'everyone else', and neurodivergent has become yet another way for folks to feel that way about themselves.