There's a new blockchain based platform called
https://pocketnet.app/video
It's still in it's infancy but looks good. You log in with a code or a 12 word phrase which you're given, just like a bitcoin wallet.

There's also a decentralised UN-censored version of reddit at:
https://notabug.io/
I like it. You can say anything you want and you don't even have to log in.