I'm sure you have a substantive point, but the way you communicated it pattern-matched so closely to the snark and shallow-dismissal categories that its substantiveness was more or less lost.
I understand how frustrating it is when there's a point which is well-known (to you) and people ought to be more aware of it. The problem is, when you let that frustration slip into your comment, or indeed dominate it, you end up sending mixed messages to any user who doesn't know the point or why it ought to be well known by now.
It's common in HN comments for people to post something that assumes the state in their own head, and makes sense in that context, but makes little sense to the reader who doesn't have that state in their head. To such a reader, your GP comment comes across as snark and shallow dismissal. The thing to realize is that only a slight minority of the audience—basically, nobody but you—has that same state in their head. Therefore, if you want to be understood, you can't assume it—you have to assume statelessness instead, and bootstrap the context by including the relevant bits explicitly.
It's also common on HN for people to respond to a moderation scolding with a version of what they actually meant and could have posted in the first place. I call this the rebound effect (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...). Your reply here is interesting from that angle because it's a partial rebound: it tells us part of the state you have in your head (knowledge of decades of research on ASD and ADHD), but still not enough to really grok your point, and the rest of it is still venting frustration.
It's of course perfectly natural to want to vent frustration when one feels it; the trouble is that this doesn't communicate the information that other people need to understand you, and the frustration itself adds noise to the signal. It also is likely to activate adjacent frustrations that other people feel, and therefore to evoke an unhelpful argument, rather than the curious conversation we want here.