You mean like Gab.ai is doing? (FWIW, I'm on the waiting list.)
Great idea - I'm inclined that way myself - but it comes with a side effect. The people who have been censored, from what I've seen on social media et. al, have some ideas that (to put it politely) are questionable.
You can see an example of what kind of folks are most interested in a censorship-resistant platform by looking at the vids on the front page of BitTube:
As you can see, those folks would likely be downvoted and/or flagged if they brought their content here.
It's a tricky thing, reaching out to censored people. Some of them, perhaps many of them, have been censored because their opinions are abhorrent to normal folks. Those people flooding in, would be a test of our tolerance.
I totally agree it would be a mixed bag and tricky on what they'd bring. I'll look into those links though, see what's been done elsewhere.