I think the key thing with these kind of discussions is where you set the line between “neurotypical” and “ADHD” because at the end of the day, there will always be people who have some traits but don’t quite meet the diagnosis threshold, and others that just get over the threshold and are considered to have “mild” ADHD.
We could, imo, consider some cases as normal variation and that modern life simply isn’t ideal for a lot of humans which means that more and more end up in a situation where they experience difficulties. This is especially true of some children with an ADHD diagnosis who seem to have minimal difficulties outside of sitting and focusing in a classroom. The education system in this country is developmentally inappropriate but the child is seen as the problem. The social model of disability is useful to consider for such cases.
However, having my own child with very severe combined ADHD, as well as complex autism and other needs… my child’s problems wouldn’t disappear if society was set up for more diversity of brains, thinking styles and behaviours. We’d have struggled to keep my child alive when we still lived in caves or at any other point in human history because of the level of impulsivity, hyperactivity, inattention etc. Yes there are other needs but the ADHD medication makes it infinitely easier to keep child physically safe so the ADHD is a very significant factor.
Sometimes when people have these discussions they don’t really acknowledge the existence of more severe and/or complex cases, where people would have significant difficulties even if society changed in a way that made the challenges of many of the less extreme cases essentially disappear.
Sometimes people with very complex neurodivergence are just forgotten when late-diagnosed adults who have a very different experience (I am one, so I’m not invalidating others’ experiences, just asking that people remember that some people are massively disabled by these conditions but due to the nature of their needs are not typically part of the conversation) sit and discuss a condition. And it’s important that they aren’t forgotten.