Preface: I've been training MA for over 10 years. I started BJJ in 2004. I've done and seen a lot.
I can't stand the people who train BJJ. I don't have an IQ under 40, I don't have tattoos, I don't act like a wannabe tough guy, I don't wear tapout or any aggressive looking shirts, I don't say 'Bro' every other word. When I go to a BJJ class pretty much everyone ignores me. I don't look or act like them, so I'm an afterthought. When we get to rolling and they get dominated I am all of a sudden their 'Bro'. Superficial nitwits. After they realize I am good they ask me when I want to fight. I tell them I have no intention of doing MMA or grappling tournaments. They get a puzzled look on their face and walk away. I overhear them talking about MMA. "BRO! Grey Maynard has some SERIOUS hands! BRO, look out for him!". One of them says to me "BRO, did you see TJ Grant's fight?" "No, I didn't" "BRO, he can throw DOWN". Such cheesy and exaggerated commentary from fools who have never heard of Kazushi Sakuraba.
I've quit BJJ because I can't stand the morons who train it. This type of idiot doesn't do Judo or other Martial Arts. If I can't have fun with my training partners the training itself is no longer appealing.
Er . . . you described exactly one guy from my gym, and he left. I think the fact that you've gone to four different schools just means you went to the wrong four, or you didn't really try to find the guys with whom you have more in common. Stupidity tends to be very vocal.