RMS is a delightful man (I've had the pleasure of interviewing him at length in person), and his demands are completely in line with his philosophies. His dedication to free and open-source ideals, if impractical, is also inspiring and rare.
Saying he has "a retarded way of dealing with people" is perhaps too general. I myself found him enchanting and enlightening in our interactions. Maybe you just didn't like the way he treated you.
He certainly manages to get your attention. I saw him speak many years ago, the room was full of young, passionate enthusiasts and true to form even with his unkempt appearance we were glued to every word. I have no doubt he has been almost entirely responsible for maintaining the high profile nature of free software (for all his complaints about 'open source', the side affect has been to create a rich culture of sharing while producing work you can get paid for).
Saying he has "a retarded way of dealing with people" is perhaps too general. I myself found him enchanting and enlightening in our interactions. Maybe you just didn't like the way he treated you.