Merely calling people Marxists would be better than what he actually did, which was calling them a “toxic loonytoon” conspiracy theorist engaging in “political ratfucking” by attempting to “install political officers in every open-source project” as part of a campaign against freedom. Sure, he also mentioned Marxism, and probably associates all those other things with Marxism, but the reference to Marxism itself was probably the least problematic part of the barrage of personal attacks.