I just don't know where to draw the line.

Like I hear rumors that lemmy.ml is infested with tankies but I generally do not see that anecdotally as I've lurked over the years. Their posts tend to be a lot more moderate, but as I found out, at least one of the moderators in one of their communities is pretty tankie. I also got dogpiled with votes in the "Is Xinnie the Pooh always racist?" discussion, so it could be the silent majority are tankies or otherwise rabidly pro-socialism/anti-racism. So you're saying I should just block the entire instance off of one bad experience and some rumors? I ended up just blocking the community a few days ago.

Then there's lemmy.dbzer0.com which is an anarchist instance as I understand them, so the instance itself is not tankie but lets tankies do their thing. So if I block the instance I'd just be throwing the baby out with the tankie bathwater?

Tough choices. I feel like blocking instances for things like this would very rapidly make my fediverse very small, especially given the entire foundation and growth of the platform arguably arises from decentralization in protest of auth-right social media platforms. I would rather rub elbows with tankies discussing non-tankie topics than proactively cut myself off from all suspected tankies and thus a huge swathe of the fediverse.

Edit to add after I saw the last line of your comment (did you add it late? does Lemmy support ninja-edits like Reddit?):

I'm pretty sure that my announcing that I blocked the two users who were arguing with me and asserting that I was racist for not realizing Xinnie the Pooh could have racist connotations as well as saying the Uighur genocide is western propaganda is what actually got me banned and all of my comments nuked. Obviously they're too far gone, but they wanted to make a spectacle of me and as soon as I noped out they realized I could no longer be fit for purpose.