I find that a little odd, too (Miletich being boring), because there were some very entertaining fighters training at MFS however many years ago.
Hughes, Lawler and Pulver were some of the most exciting fighters to watch at the time. Lawler still is one of the most exciting fighters today and definitely top 10 all time in terms of being fun to watch.
Sylvia had some boring fights, but he had some pretty good ones, too. Jeremy Horn is a different story, though. He's had so many awful fights, so boring it's basically torture.
Miletich is/was widely considered to be extremely boring, but we should all be glad he was around because his gym produced some amazingly entertaining fighters, as I already said.
It's strange that someone as boring as him played such a major role in producing some of the most exciting fighters in the world at the time. I'd rather listen to him commentate. I'd definitely prefer to listen to him commentate over Stann and Anik, that's for sure.