"I think there are a lot of people who want to play at being scientists or engineers when they defend their technocratic positions on audio."
I believe that there are many who are unwilling to acknowledge that there may be gaps in their knowledge base, as well as having a low risk tolerance for being proven wrong.
Then, there's the "SGR" thing. I became familiar with this term back in my home automation days when a gathering of really smart guys would occupy the same room and quickly attempt to establish who is the "Smartest Guy in the Room." Audio forums provide a somewhat less confrontational venue, but can be rather energetic at times.
It's all pretty harmless in this enviromment. Some other situations, not so much.