You are right, his disability has always given people the cheapshot.
But it doesn't give anyone immunity, Brennan attacked 8chan and this site, boasted about it(captcha attacks), probably a lot of reasons but on HBO he thought the 1st amendment went too far when Jim and CM seem to think the 1st is fine, aslong as what you post falls within American laws, which is the crux of it all right there. He's been at the center of bullying his whole life, probably a perspective some who get called retarded a few times a year would never understand