I have also wondered whether the big ASD umbrella covers a little too much.
I can'tbegin to imagine what it's like to care for, and worry about, a severely impaired/disabled child. Hats off to anyone goin through that.
However, while my "burden" is clearly a lot lighter, it is still a burden. I struggle every day. People don't take to me easily, sure I have a (very) select few friends, but I can literally feel people shying away, bristling or otherwise distancing themselves from weird ole me on a daily basis. And it's happening to my child too. But we are just expected to fit in, and it's just not possible.
Sensory difficulties? That child is spoilt, you're a bad parent. Difficulties socialising? It's because of xyz you as the bad parent have or haven't done. And so on and so forth.
"High functioning" autism (or whatever else it should be called) is very poorly understood, especially in females, and any proper support and understanding is so, so, so difficult to come by.