I would love for this to be the case, however I quite extensively investigate this phenomenon and this does not match what I've seen. I'd like for us to be better than shadowbans. In some cases, I don't even get to vouch, it's just a comment that is banned-banned. It feels the worst when they're saying something substantive to the conversation and we have no means to surface the comment.
Some type of annual amnesty consideration or something of that nature is in order, or soon we'll recreate other echo chambers that are slowly fading out.