Being intellectually disabled doesn’t preclude you from being an asshole, and to imply as much is kinda insulting to their humanity.

I’ve known many (and am related to one) many intellectually disabled people, and while most of them were nice, I’ve met a few who were raging assholes (one of which was given an assigned seat on public transportation because he constantly bothered high school kids and the driver was sick of it). The intellectually disabled are human and aren’t necessarily good people just because of their diagnosis; they’re just people who have personality flaws just like the rest of us.