I don't see how you can say people turn every discussion into an argument.
I think it's a positive thing, to talk about how people with disabilities might feel about comments, including comments the makers didn't realize might be upsetting. That doesn't mean we have to have an argument about it and it doesn't mean I don't see why people want to post about malapropisms, because they are funny. Obviously they are!
I did get the impression you thought it was a positive thing that, despite having a personal connection to people with autism, you wouldn't choose to respond to posts the way some have here about dyslexia. Yes, I don't know you and may be misunderstanding, but actually, I think we do disagree here, right?
I think it's important to respond, because the alternative is that people will go on merrily upsetting others with disabilities. Most people aren't actually arseholes and don't want to give offence, you know.