The Infamous
Superstar
I know there are good MMA fans out there. I post about MMA here for a reason though. Sherdog, UG, Bloodyelbow, MMA Junkie etc. confirm every stereotype about the fanbase and I had to leave the former two because of all the stupidity. Silva, Machida, Mousasi, Cung Le and kickboxing crossovers like Spong and young Cro Cop are awesome strikers but 90% of MMA stand up is wrestlers throwing the same ugly kickboxing combinations. Most of the elite strikers in MMA are just ok anywhere else (JDS). MMA is a grappling based sport.
I've only been on Sherdog for a bit, I can't really say anything for those other forums. Sherdog is full of idiots and trolls, I wouldn't take what they say seriously.
90% is again, an exaggeration. And what are you expecting for wrestlers [or BJJ practicioners] who have trained striking for a short period of time?