I am also a redditor and some of the subreddits are a really high-quality communities. What I don't understand is, why the reddit owners allow even the most disgusting and inhumane stuff to be posted, as long as it isn't illegal.

I am not sure if it is just because of the personal preference of the owners, or they do not want to waste time with enforcing at least basic civility, or is it some inherent part of the reddit's success that anything not illegal is allowed to be posted there?

It is actually an interesting moral question: Is someone allowed to publicly deanonymize someone else?