It's an interesting one: my NHS diagnosis was "just" autism, which is why I'd always say "I'm autistic".
I was diagnosed as an adult because of some fairly big difficulties, so even though I can walk and talk and am definitely distinct from people who can't (by a long shot), my daily life seems pretty hard compared to regular ones around me in many ways.
I am still disabled - even if not as badly as others, and I think posts like fierys can touch a nerve when it feels like yet another person dismissing how tough life is when it seems hellbent on torturing you more than others.
However, I also see the point; I really don't want to appropriate someone else's lived experience or offend others who see it as "their" label. I asked this in another thread and I mean it sincerely - what would be a better thing for people like me to say though?
Personally I really, really don't like the word "Aspergers" because of the connotation with the man and his clinic (Neurotribes saw to that). I can't get past it or the mental connotations it has.
I can't use "higher functioning" because I've been told off for that in the past, partly because it indicates that others are "lower functioning", when actually everyone has a spiky profile, and intelligence can't really be measured etc etc ... and once a rule is set in my head it's really hard to over-turn.
What's left?