Yeah.. Wiki's systemic culture problems have chased off a number of editors. The own admins don't even follow the site's rules when its convenient for them not to.
This is not a matter of opinion. One such rule is that there is a procedure to go through for deleting pages - I've personally been victim to a now-ex admin who killed a page I was working on, completely bypassing the checks and balances that are supposed to be in place. (Said admin was later kicked off the site for bot editing without approval, but not for ignoring deletion procedure.)
The site's still quite valuable as long as you avoid politically charged topics (and run, don't walk, from the talk pages), but they are open to being forked if this continues.