Saidit rules don't say "hate is not allowed on this site". It's heavily discouraged though, as per the pyramid of debate. https://saidit.net/static/PyramidDebate.jpg

What is actually not allowed is calls for violence against an individual or group, which is the lowest level of the pyramid of debate.

Banning hatespeech is far too broad, which is why we don't do it. That means I can say, for example, "All lives matter" and you could ban me if you considered that hate speech. This isn't good policy, and it's a big part of why sites like reddit are falling apart and becoming houses of censorship. So it's just the advocating violence that is outright banned here.

Ideally, everyone would just be at the top level of the pyramid of debate with every post and comment. :)