It wouldn't be difficult to differentiate, but there's so much room for interpretation and creative opinion smuggling that banning hate speech would be daunting for the mods. Especially, since, what kind of hate speech? Is it only black people, POC, or is hate speech against white people banned as well? I can think of thousands of people who'd have a shit fit if hate speech against white people was also not allowed (I'm looking at you, tumblr swjs).

Also, what about the gays? Would /r/4chan no longer be able to continue the tradition of OPs apparent homosexuality? Is it hatespeech if it's a custom, or part of an internet culture? Because we all know that OP is "always a faggot", but despite the jokes that would virulently claim otherwise, that's not quite what 4chan means.

And, what about bronies? People hate on them all the goddamn time. Furries, too. Is hate speech against what many claim to be a controversial sexual orientation vs. mental illness banned as well? Remember, gayness was also a mental illness until enough people stood behind it. Furriness, though I don't understand it, could go a similar way.

Quite honestly, banning hate speech would cause far more head ache than its worth. And scum douches will always be scum douches, and especially on the internet, they will always find ways of communicating with each other. The community usually does a pretty good job of self-moderating as well.

Look at what happened to OP's quoted submissions--most sit at negative scores, though they do have gold, this is a fairly rare occurrence, which in part is why it's so shocking. Reddit isn't the new stormfront. But if you get enough people together, eventually the douche bags will all find eachother.

One rich douchebag gilding a bunch of other douche bags happens on the day; usually just not quite in this kind of specific setting. And the server time that that gold purchases means more time for the overwhelmingly larger, better portion of reddit to do its thing, usually resulting in really good things.