I'm not advocating anything-goes - I'm not sure what I'm advocating. But I know something is out of balance, here.
I can tell you what's out of balance because I've said it here before. Facebook, Twitter, and friends have become the new AOL. The younger generation has precious little concept of the "internet." For them, the "internet" is their news feed on Facebook. I know a bunch of people that don't even bother to use Google anymore even though Google is a household name. I hear uninformed people talk about the "dark web," and they aren't referring to tor sites, they're referring to anything outside of the smartphone apps that constitute their walled garden social media experience.
This is Slashdot, so the audience here is a little older and more technically minded than most. For me, my first exposure to the internet was Usenet, then IRC, both completely uncensored mediums with no corporate agenda. That's what we think of when we think of the internet but we're squarely in the minority. Hell, even sites like Slashdot have occasionally had to censor comments and that was before they had corporate overlords to answer to.
It's not that Facebook is inherently evil, it's just that it's a large for-profit corporation; they started by censoring what's politically popular to censor, hate speech, ISIS videos, and the like, because they don't want their name tarnished by the association. Then they expanded to censoring other things -- firearms are no longer allowed to be sold in their marketplaces -- that have limited mainstream appeal, because they concluded that the cost benefit wasn't there for them.
In theory, what they do with hate speech is no different than Applebee's declining to host the local KKK's meet and greet, but in practice they've become so large that they're essentially a gatekeeper to the online community, and as noted it's hardly limited to hate speech. Once you decide that you're going to censor your platform -- and the motivations are too strong to resist for a for-profit enterprise -- it's obvious that you're not going to be able to stop at "hate speech," however defined.
I don't know what the solution to this is but it does sadden me when I think of how we escaped AOL only to replace it with Facebook and Twitter.