I've had experience in a couple academic insitutions and among hundreds of faculty I've met, only three were real elitist assholes. Known among the departments as such too. But hey, they bring in the grant money, so people let them continue to run toxic labs. At least their sub pis are usually decent people.

I've heard of stories of posters at conferences getting tossed out because a single "important" person on the conference committee had a problem with the author's advisor.

All that being said I don't think the rate of assholism is any different from the rate among the general population. Quite the opposite. Most of us look at those Nature moonshot labs in our depts as something of a cult lacking any semblance of work-life balance. We find most of our most compelling papers and examples of great science are not in CNS publications, but in journals niche to our field with single digit impact factors. A big part of that is reviewers for niche journals are able to actually understand the work and give a better review.