I'm an ML, not an anarchist, so this may not be directed towards me. However, from my perspective, rigorous Marxist-Leninist analysis often gets dismissed as merely "west bad" by critics that would rather not engage with the actual analysis. It's similar to calling someone a "tankie," the utility is in packing a pejorative with nonsensical or outright evil traits, and smearing your opponent with it.
This isn't even getting into the use of "authoritarian" as a meaningful identifier of a state, as though there could ever be a "non-authoritarian" state. Marxists generally identify states by the class they represent, because that's far more meaningful than the idea of a state that somehow isn't a monopoly on violence.
Just my 2 cents, I'm sure anarchist comrades can share.