I read his biography, but I don't follow his work or life very closely. So I used a vague, hand-wavy term because I have a vague, hand-wavy understanding of it all. Therefore, I cannot clarify.
As for "being crapped on and disrespected", well, if you've spent enough time with him, you'll understand why that was a common reaction, he's ... a difficult person
Yeah, I get called "difficult" all the time. I have a life threatening, incurable medical condition. I am pretty laid back, inclined to go along, to get along, and a conflict avoider. But, unfortunately, in order to be socially acceptable, I would need to politely die a slow gruesome death. Failing to go along with that plan for me has caused me shitloads of social problems.
Thus, I am inclined to be sympathetic to rms. Many of his predictions have come true. There is no telling how much more problematic things would be had he not stuck to his guns.
"Difficult" sometimes just means you aren't going along with social norms. If you firmly believe those social norms to be a very serious problem, it is foolish to go along with them. In my experience, no matter how politely you decline to go along with them, and no matter how compelling your reasons for politely declining, simply declining will get you a fuck ton of backwash.