Earlier quoted context omitted.
Why do we need an absolute free speech platform? What good does it do? > The only somewhat free place I've seen is 4Chan but it contains so much toxicity, that's its barely bearable. Sounds like a hint to me. There are more free speech sites, e.g. saidit.net. I would wholeheartedly recommend staying away from it: it's a cesspool, like the other reddit wannabes. Voat also comes to mind. Freedom of speech on such sites…
When only the rejects use the sites of course it's going to be full of bad content. That doesn't mean there isn't value in free speech being better valued on mainstream platforms.
The problem with this theory is that 4chan is older than both Twitter and Facebook.
If unmoderated speech created an inherently better platform, surely 4chan would have captured the market a long time ago and cut off commercial alternatives like Craigslist did.