A question for the moderation

I already know the answer I will get, but it amuses me to deal with first tier support after 14 years in the industry:

Why are comments and threads consistently removed or edited, however those few users who quite literally wander the boards calling anyone they disagree with idiots (or worse), blatantly, are happily ignored? It cannot be a lack of reporting, I and others have tried that, so there is another reason. Most comments I have seen removed are by users complaining about RIOT, and then below when discussing the issue with other players their statements are moderated... and blatantly offensive statements against them are happily ignored.

For example, a user saying someone else is being "purposely thick", which is only insulting if you have no idea what the phrase means, removed in the same thread that someone else has quite bluntly called them stupid.

I do not like to call administrative bias, but. .