Like, I remember as recently as 2016, that term was just used as a mocking term for weird larpers. Now, it's used as a term for people they want to purge from the left (yes, I'm using those words. How they're acting is literally the definition of purging, it doesn't have to include violence).
My memory isn't the best in general, but while "larper" is for sure a term that'd get thrown around as well by people who dislike those they call tankies, tankies has meant "Someone who doesn't believe imperialist lies about AES countries" by people who believe and perpetuate those lies for as long as I can remember.
I'm sure there are some young folks with more passion than sense who think revolution tomorrow is a possibility, but it's always mostly meant "People who think that the Soviet Union was mostly good," IME.