Depending on which mods you allow, which sitewide rules you set, and not least how you applu or not apply the rules, you get wildly different instances.
It happens across the whole instance, it’s an admin level problem. My favorite is when you say something critical of the site admins, Russia, or China and get not only the comment removed, and not just banned from that community, but any other community the particular user moderates
Imagine being that petty- someone disagrees with your chosen political stance, so you go community by community and ban them from every one to protect your fee fees.
I'm just pointing out the nuance. Broad brush doesn't help anyone. If you automatically assume everyone from lemmy.ml is a tankie, even though it's one of the largest instances, and the original Lemmy instance, then you're doing yourself and all the more moderate users on lemmy.ml a disservice.
It's full of originally stupidly pro-communist, now joined by the stupidly anti-communist people. Most of their discussions are "communism good you dumb" and "communism bad you dumb", with a bunch of kindergarten level gotchas.