Communism and socialism aren't vague nebulous concepts, they are very well defined, and those definitions are, as stated above, inherently incompatible with tankies' actions (or at least the actions they support and stand for), never mind that co-opting leftist language and ideas is a well known and documented tactic the right use to manipulate people in to supporting them, before they drop the mask to reveal their true authoritarian bigoted selves (ETA: even if a dictator started out meaning well, once they become a dictator, they've abandoned communism).

But sure, name an unrelated fallacy instead of thinking for yourself, that's sure to end well.. 🙄

Don't feel too bad, at least you got to feel like you "got me" there for a millisecond!

(pasting this edit here too, to be clear: trying to achieve communism, and actually doing it are very different things, and if you end up with an authoritarian regime, you've not achieved communism, no matter what you call it, it really isn't complicated)