At that time, it was so bad that senator John McCain called it "human cockfighting," and New York City mayor Rudy Giuliani, who happens to be a boxing fan, called MMA "disgusting" and "horrible," which contributed to MMA being banned in the state of New York, and it still remains banned to this day. MMA was also banned in a number of other states for a number of years until the UFC introduced the new rules, but New York still maintains it ban on the sport.
Given those two guys are idiots I don't think most people care what they thought about MMA.
Rudy Giuliani was the former mayor of New York City during 9/11, and he happened to be a fan of boxing, but he thought that MMA was way beyond boxing; it was people brutalizing each other, and in a way, it is. Fights seem to be quite brutal, more brutal than boxing.