Tankie is a pejorative label generally applied to authoritarian communists, especially those > who support or defend acts of repression by such regimes, their allies, or deny the > occurrence of the events thereof.
So, tankie is a term used to describe communists that push back against any liberal propaganda, because obviously liberals never say anything wrong or disparaging about communism, they are only ever truthful and correct.
The communists that don't push back against liberal propaganda? They're good not-tankies.
This is basically "anyone that disagrees with liberals is a tankie". It's a non-falsifiable thought-terminating cliche intended to prevent people from listening to anyone to their left other than the people that claim to be leftists but ultimately only reinforce liberal propaganda.
"Communist" that supports liberal narratives = good
Communist that performs any struggle against liberals = tankie.
It's painfully obvious why Cowbee just defaults to "Tankie just means communist". It's true and correct. Liberals consider any communist that disagrees with them a tankie, and any communist that does not disagree with liberals is obviously still a liberal, that's kinda how ideology works.
