I don't totally disagree with you, but the leftist infighting is of a very different nature than left vs. the establishment. For one, those on the left don't actually have the power to cancel each other. The platforms are owned by the neo-liberals, which direct the canceling through who they allow to speak their mind and who they don't.

> And there is also of neoliberals that pretend to be leftist, yes, so called "Radlibs".

These are the people doing the canceling (both to the left and the right of them). It's worth nothing the distinction as it's this group with the power.