This is a well established pattern: someone who grew up in the Soviet Union and had traumatic experiences with ideological conformity now reacts to something happening in the US with a ferocity of feeling that ends up comparing that thing to pogroms, forced collectivization and ideological purges. Is it warranted? Depends what they are saying, and their points should stand on their own. But they are larded with Cassa…
I think we can call that an ad hominem attack: "This person sounds like other people I don't like. Therefore I don't like him."
I don’t fully discount this persons experiences. But I’m wary of an appeal to emotion.