As an aside.... think about various forums (fora?) .. where total moderation is employed! Some even require review before a post is allowed to be seen! These are usually 'special interest' place (you know.. the "Cannonball Collectors").. where there are a very limited number of posters.

Some..as noted.. require membership & cookies for ANY posting, even though this precludes some from registering.

Mudcat has a VERY wide following for various reasons... and as total numbers of followers rise, so does the total of disparate opinions...and as an obvious corollary, so does the total numbers of those who cannot or WILL not compromise or practice restraint.
It's just math... the more attending, the more chances for problems.

Would YOU like to moderate the United Nations or decide immigration policies for the USA & the UK?...well, perhaps you would, but you wouldn't expect to do it with no complaints....