For a taste of unironic communism in 2021: https://www.pslweb.org/ Some good people, some bad people, all in the throes of some pretty terrible ideology. shrug
To be clear, not endorsing any of these ideological positions, just happen to be familiar with them owing to a misspent youth.
He went after AI researchers back then, attacking their hardware would make sense. I mean, I'm probably just a few years and a few bad turns away from seeing AWS & co ("Surveillance Capitalism, Inc.") as a large harm to humanity that needs to be stopped, so I'd be surprised if nobody is thinking that today. The scale of data centers likely makes them super hard targets for the super majority of groups or individuals, which is why we don't see a lot of attacks on them (yet).
I don't have a problem with communists. I do believe that they're coming from a good place, but are fundamentally mistaken in their analysis which does lead some of them down some very dark paths. It just feels like believing in the geocentric model of the universe (or flat earth, I suppose that's more current), which sounds like lots of fun, but would turn weird if you start to realize the person you're talking to actually believes it and isn't joking.