I completely agree that this is most likely a temporary phenomenon, and once things come down in a few weeks a lot of these liberals will stop engaging.
One point I'd like to add is that we should actively participate on lemmy.ml to prevent libs from taking over. The way I look at it is that Lemmygrad is an instance where communists can talk to each other, and lemmy.ml is a place where we can educate people and counter liberal propaganda. It's also valuable for us to see the arguments libs make and how to counter these effectively in a forum that's not fundamentally biased against us.