Well if this place is really how 'dark-triad themed minds' behave, then I'm not impressed.
The greater majority of it seems to be gossip about other members and general immaturity.
Why not try to find a place where "being an asshole" is the norm while also not boring? This place for instance is fine with assholes as long as it doesn't get in the way of their own ability to be one as well.
Beyond that, I don't imagine your solution coming from voluntarily repeated attendance to places you hate. Either that or you may want to train your sense of conduct so that you aren't constantly shunned, maybe through the use of other outlets. I personally find better results from getting to know a person well enough to prod at them from within instead of going about it externally.