For example I have ADHD without autism and grew up thinking I was “smart but lazy” because I was > 99% as far as raw intelligence but had little motivation for the drudgery associated with school (or indeed life itself), yet I could play video games for hours straight without seeming to be at a disadvantage compared to neurotypical peers.
This is because ADHD, among other things, is a disorder of attention regulation as opposed to being completely unable to pay attention to anything.
It's cool af if you're young and single and you can just go and go and go on what it is that you're totally wrapped up in. It's shite when you grow up a little and other people have expectations of you and you constantly fail to meet them.