Everybody has already mentioned that, actually, neurodivergence isn’t exclusive to ASD and ADHD!

As for your point about it being for everybody, that is definitely a heated argument. You could argue that neurodivergent conditions were created, in part, to separate them from the “normal” people (especially in earlier times), but you could also say that having a good classification means you can better help people who have these sorts of conditions (especially in modern times! We are in a golden age of accessibility!)

Speaking as somebody who was diagnosed with Asperger’s syndrome as a kid, now part of ASD :D