There's a subreddit for everything. Reddit as a whole has plenty of users that represent any opinion you can imagine. Fairly conservative subreddits hit r/all regularly, but not as much as less conservative ones.
I think what you're trying to say is that on default subs, or some popular ones, that you can't post/comment some things without it getting removed, and possibly banned from those subs. Which is absolutely true. Same thing is true on HN, you can't even make a post about Grok's latest escapades without getting flagged.
But if you just want to have some space to discuss some topic, make subreddit for it, moderate it however you want. Reddit itself isn't going to ban you unless it's against site level guidelines.
It's pretty hard to get a site level ban. One easy way is to use a VPN though. My account (and any new one I make, so probably my IP/device too) was banned for ban evasion because I accidentally left my VPN on when using the Reddit app.