The Legendary Dragon Alephwyr, named Alephwyr, BA

Every day I got a little note card evaluating my behavior for the day. I could save them up for points to "buy" a cheap plastic toy. Cutting-edge applied behaviorism or whatever they called it. There was also a dolphin puppet named Duso, for teaching social skills.

I was in there for three years, then went on to junior high and got dropped in the "LD" classroom, which was mostly for the sub-85 IQs, although there was one guy in a wheelchair who I had to help use the toilet. Anyway.

Schools put people with the worst intellectual disabilities in institutions; one step up, they go to regular schools, but they're kept in little special rooms, away from other kids. Either way, normies don't know them.

I don't see what your anecdote has to do with his claims other than "the intelluctually disabled exist".

Perhaps because of your low IQ

Can you actually explain his point instead of just insulting me?

Yes. He is saying that because he has experience with low IQ people, he can confirm the accusations he is quoting. Others cannot because they don't have that experience. It's basically an appeal to authority of sorts, but probably a non fallacious one or a heuristically valid one

"I met people who I, from my subjective experience, felt had some of the qualities this other post claims low IQ people have" proves very little. The post he's responding is filled with claims about specific IQ cutoffs for abilities, which seems impossible to prove from anecdotes