Maybe this will be an unpopular opinion, but hear me out: it is the video platforms like YouTube, TikTok, etc. Before these platforms, it was relatively difficult to find videos of "ordinary" people in everyday situations. Sure there was funniest home videos and other carefully curated channels, but now it is easy. And with consumption of these videos comes the desire for a vocabulary to classify and describe them. Like how food is spicy or sweet and has different ethnic styles, or music has a tangled mess of genres and substyles, the teenagers of today are developing a classification of (videos of) human behavior. And part of this is non-neurotypical behavior - I don't know why, I haven't really investigated this, but it is clear that some (a lot?) of people enjoy watching content from autistic people, ADHD people, etc. For them, or at least the ML algorithms that feed them content, it is a genre like any other, and in the incestuous cycle of hunting for views, whether the origin was man or machine, at this point it has become branding.

What I'm not clear on is whether this translates to better real-world interactions. Certainly, it raises awareness of the conditions, but just watching a video does not necessarily lead to smooth conversation. Generally meetings with famous actors are pretty awkward and it is even less clear to me that someone who watches ADHD videos would necessarily enjoy meeting an ADHD person irl, particularly one that doesn't make engaging videos with millions of views.