Comment by mpalmer

Enthusiastically denouncing or promoting something is much, much easier and more rewarding in the short term for people who want to appear hip to their chosen in-group - or profit center.

And then, it's likewise easy to be a reactionary to the extremes of the other side.

The middle is a harder, more interesting place to be, and people who end up there aren't usually chasing money or power, but some approximation of the truth.