I've looked through the whole thread again and I don't know where you're getting the idea anyone's accusing tankies of being sellouts. Best I can guess is that you misinterpreted the comment immediately above yours as saying tankies are secretly supporting the current fascist regime, is that it?

That's not what they're saying, they meant that tankies (I would clarify that it's the chronically online tankies that are like this) want other people to fight the revolution for them, and won't lift a single finger themselves until they can be sure that victory is inevitable. This is because they see themselves as the vanguard that tells everyone else what to do and how to do it, and will be put in charge after the revolution. That's why people call them red fascists (though I don't like that term myself as I don't think they should be conflated with actual fascists, it hinders understanding), they want to be in the fascists' place so they can use the systems of power and control that they built towards a different end (changing the economic system).

A previous person I talked to on lemmy.ml not long ago illustrated this mindset well, saying that authoritarianism is only a buzzword made up by the west to demonize their enemies, that it's just people exercising power, and that it's good when communists do it. Here's what I see wrong with this: the tools of a fascist state are purpose-built for oppression, and trying to use them for anything else is futile. You will be corrupted by their power. We should not be trying to take and use these tools, but dismantling them and creating our own which are purpose-built for liberation.

Spotted the tankie. Cope and seethe harder.

Both. They're the intellectual equivalent and ideological opposite of libertarians with equally internally inconsistent views.

Neither, because that would actually require praxis.