No it is not a limitation. Voyager and Eternity can do it.
Block these instances: lemmy.ml lemmygrad.ml hexbear.net
There is no point arguing with tankies. They are dumb and they won’t change. I just hope there will be a way to completely block those users including their comments. They are polluting the fediverse.
Give them a penguin smoking while holding a can of beer, saying the nastiest words.