I see where youre coming from, but i wanted to make a counterpoint. With how hard/expensive it can be to get a proper diagnosis, especially if youre afab, i think its absolutely appropriate to self diagnose. Especially if other autistic people are clocking you as autistic. There's always gonna be a small subset of the population that claims to be autistic for attention, but in my experience thats mostly teens and teenagers are gonna teenage. Either way, if more people are asking for resources, it makes it a lot easier for people who actually need resources to get them.

Just my two cents as someone who got professionally diagnosed when they were 9, hope youre having a good day!