Ehh once you see it you can spot the Tankie arguments pretty fast. Usually it starts as some sort of nitpick or factual correction regarding Russia, China, or another country in their sphere of influence, then some overarching opinion that sounds okay on the surface but the moment you put more than a few seconds of thought in you realize its wrong, sprinkle in some vague and slightly conspiratorial-sounding references to not falling for propaganda, then usually it devolves into pointing out something bad the US has done as a false equivalency while conveniently avoiding the finer points on why it's a false equivalency. Oh and they never mention the Nazis because their arguments so frequently are perfect arguments to also defend the Nazis, but they at least know it's a bad look to align with Nazis.

Personally I will call out racism/apologism/transphobia with a 2 reply limit then block, because I do not want that to be normalized, but also people posting such comments tend to be trolls who enjoy arguing in bad faith. I did also block the entire hexbear instance on my account (it's an option the settings now!) because that's not just random redfacists but an echo chamber for redfacists to continuously reinforce their beliefs.

blahaj lemmy is indeed defederated from hexbear, idk about lemmygrad