If you want to speak freely, don't expect to do it on somebody else's platform. Even if you aren't subject to censorship at the hands of the admins or moderators, you might still run afoul of the prevailing groupthink.
Here's what you should do if you're serious about free speech online: Start your own website. Run it under a pseudonym. Host it on Nearly Free Speech. Ignore all SEO advice, and disallow all crawlers in robots.txt. You might not get any human readers, but you aren't likely to get censored.
Otherwise, posting on 4chan is an option if you don't mind having racial or homophobic slurs hurled at you by poorly socialized adolescents who think too highly of themselves. And there's always Substack; if they can tolerate avowed neo-Nazis like Richard Spencer and white supremacists like Richard Hanania, they can probably tolerate you.
Just remember that if you frequent a Nazi bar like Substack or X, people will assume that you're a Nazi.
Right here, except that this forum is heavily censored
Everything you mentioned is pretty mainstream and unremarkable on HN, reddit, Twitter, and BlueSky.
Probably among people that are so civilized that you may never encounter a whole crowd of them.
Either that or ironically among some kind of . . like . . minded . . . people . . .
Nobody would downvote you on Reddit for talking about those topics, unless you’re all in favour of wealth transfer to the billionaires etc
Used to be matrix chat rooms though the cool nerd kids go to more exclusive special use platforms driven away or displaces by waves of bad actors.
It is a fascinating sociological experiment, though frustratingly inconsistent. I have had deep and worthy conversations in the odd hours on breadths of topics.
Everything now is probably dead though a million people share your call for social-political forum.
Good luck finding it!