In this approach, you concede a need to at least occasionally intervene in a particular kind of dispute such as banning the white supremacists
Another problem with this is what does one mean by “white supremacists”? The definition used by the people who most advocate banning them tends to include anyone who believes in certain statements about the differences between races that are almost certainly true. For example, how race correlates with IQ. This is especially a problem for a forum that wants to be “rational”.
(c) whether the information on the page is accurate.
Except not all topics and not all information are of equal interest to people.