Best to block all Lemmy.ml communities, as it is full of tankies, including the mods.
This specific one has mods who let reported tankie disinformation in form of both comments & threads stay, as well as insults towards other users by the same individuals. I tried reporting rule breaking comments & threads for a few weeks, monitored if they'd do anything, but nothing happened and the same users continued doing the same spiel in other threads.
If Lemmy.ml isn't distancing itself from Lemmygrad and Hexbear and does enforce their rules selectively, then there's no reason to treat them the same as those other extremist communities.