I agree completely with what you said. I might only add that these people have heavy western centric views(or simply unchallenged racist white supremacist views) and, even though they don't openly shout slurs like the fascists, they do show their racism very discreetly by how they react to certain geopolitical events:

• Endless struggle sessions regarding electoralism in the imperial core where they hype failed tactics just like the liberals.
• Soft criticism to socdems like Mamdani while harsh criticism to the point of exageration regarding the AES like China
• Blatant disregard of non western point of views while glorifying imperialist propaganda narratives and pro-US bias. You can see this when they question about Mamdani even to the point of justifying grotesque actions(anti Cuba and anti Venezuela talking points) while eviscerating China with idealist arguments(example the fact that China has private property).
• Whenever they talk about the AES, they start from the premise that the AES(example China) are neoliberal/capitalist/imperialist or xy buzzword and then go from there to argue about any event with those lenses. If they are unable to achieve their purpose of muddying the waters, they will simply move on or avoid commenting.

For me, the objective of those people is easy to read and it is to demobilize westerners and to destroy solidarity by dehumanizing the oppressed while installing nihilism in the western masses. I have seen this over and over again even. The most brutally recent event right now is with the Venezuelan case where accounts appear in the Telegram channel and deleting every comment after not achieving their purpose.

It just shows how dangerous it can be for online spaces if comrades are not on the lookout for anticommunists dressing reactionary and pro imperialist talking points with leftist/marxist jargon.