I also think a ton of people miss the point when they think functioning labels or even the current three categories we have in the DSM "help people get the right support". Autism is more like fingerprints than three super broad, vaguely defined categories. Take any one of the current categories and you still get extremely diverse support needs.

I've also found that typically, when you drill down further into why someone thinks our current subcategories supposedly "help" tailor services, I tend to find a lot of crab mentality, martyr complexes (whether its parents or other relatives wanting their "badge of honor" for "putting up with" their Level 3 relative) and zero-sum thinking, as well as often, a belief that there's some huge swath of people who are "too mildly autistic" to deserve support, are therefore "stealing" services that "need more stringent gatekeeping" (as if they weren't already too hard to access).