User error.
It's really not hard to not get banned. Site-wide, at least.
I'm pretty active and my account is nearly 13 years old.
https://twitter.com/ndrew_lawrence/status/105039166355267174...
Conservative: I have been censored for my conservative views
Me: Holy shit! You were censored for wanting lower taxes?
Con: LOL no...no not those views
Me: So....deregulation?
Con: Haha no not those views either
Me: Which views, exactly?
Con: Oh, you know the ones
- suggesting that COVID-19 was the result of a lab leak due to not following safety protocols
- Questioning if the full shutdown of schools for a disease which had a relatively low mortality rate in children was the best decisio and if we fully had considered the impacts.
- suggesting that predators could abuse gender self identification laws to gain access to new victims.
- and one satirical posts advocating "let us grill it all in a beautiful nuclear inferno."
It seems though you are suggesting there are only a narrowly defined opinions that are acceptable to hold and that deviations outside of those are so heretical that should not be allowed to exist.
Only admins can ban you site-wide or shadowban you, and I can't imagine expressing any of those opinions being worthy of a site-wide ban from an admin unless you expressed them in an offensive way. ie, for the first opinion, using a slur when referring to the Chinese lab workers, or basically in any way accusing them of poor standards because they're Chinese. Likewise, for the third opinion, I've too often seen transphobia get disguised as concern trolling.
If it's moderators banning you from specific subs...well...that's just shitty moderators. Some of them are extremely power-hungry and ban happy, but they're not employees of reddit, and their actions should not be reflected on reddit as a whole.
Come to think of it that might be a reason why their ban happy, more people you ban who come back looks like a new user signup.