I want a free speech platform that allows any content from humans or bots, from any political leaning from anarchism to fascism. What’s the most mainstream platform that puts free speech first? I can only think of Rumble. There are some federated instances but they are usually small.
Doesn’t exist. Free speech is not applicable to private sites and communities which are protected by constitutional laws, not bound by them.
What you’re after is a website that has minimal to no moderation on political discourse. These tend not to exist because of the people they attract and the hot water the site owners can get into by the actions of those people.
Your best bet is 4chan.
Edit: Besides, it’d just be a slew of echo chamber vs echo chamber with few participants having an understanding or knowledge of politics—like, ‘what is free speech?’—beyond a philosophical top-layer, however everyone will see themself as an expert. This is 95% of online users that involve themselves in political topics, including most of Lemmy users.