Try posting literally anything contrary to the party line on any noteworthy sub, and see how long it takes you to get banned. Particularly with a new account.

I haven't bothered posting anything on that site in years because it's a 50/50 crap shoot whether it will even be seen, or that the post I just spent 5 minutes of my life writing out will be instantly auto-modded for containing the wrong keyword.

For more than a year, a handful of powermods were banning users which discussed the _possibility_ that SARS-CoV-2 was less dangerous than the media and politicians were claiming (now we have the data and it was less dangerous) or discussed the _possibility_ that the COVID vaccines were less effective or had worse side effects than the media and politicians were claiming (we now have the data and they were less effective and had worse side effects). These mods, who run the default subreddits, were banning users for posting in other subs which permitted such discussions -- that's right, if you posted in a sub that critically discussed what was going on, you'd get banned from default subs like r/pics and r/tifu.

I could list at least a hundred personal examples that had nothing to do with SARS-CoV-2 (usually opposing the American leftwing hive mind), but it's too easy for someone to just dismiss those as unsupported personal anecdotes. OTOH, it was well documented how Reddit shut down discussion re: SARS-CoV-2, as many other sites and services did.