calling them out for being explicitly anti Tankie, while they dont even define what they mean by tankie, which can be used to define any person with communistesc ideologies

You know damn well that in leftist communities "tankie" does not mean "any person with communist ideology". You're being disingenuous and then feigning outrage when nobody takes the bait. You don't need a dictionary definition to understand the sentiment being expressed, and the attempt to get one is just a distraction where people start quibbling over the exact specifics instead of the overall intent, which is opposition to authoritarians and state simps.