Anti-communism has always been a reaction to communism (leftist movements broadly).
Anyone who unironically uses the word tankie... ever... is immediately written off in my book. They're terminally online and have never read anything, never thought about anything seriously, they're useful idiots for fascists at best and, a lot of times, just fascists.
I feel like they think I'm being hyperbolic or forcing a false dichotomy, but, no, if you self-label as anti-communist that's basically the same as modern day "all lives matter" people which was a right wing, reactionary, movement against the movement for justice for black people in the US. There is a movement which is objectively on the side of people, justice, etc. and there is a reaction to that movement. Just how it goes. If you identify on the reactionary side... well, there you go. Not sure why this is so complicated for the "bBUT TANKIES" dipshits.