The PSL recognizes that the workers movement was so thoroughly defeated and dismantled in the US that the masses lost any sense of connection to the actual history and lessons of worker struggle. The PSL sees its task as reinjecting revolutionary Marxism into mass struggle, but also that ultimately the masses will need to learn these lessons by experiencing essentially the same failures of previous movements which have been erased from mass consciousness. The PSL cannot directly teach these lessons or directly manufacture the conditions to activate revolutionary potential, but it has an opportunity to reach more and more people as they experience the failure of other methods.

https://liberationschool.org/theory-and-revolution-addressing-the-break-of-ideological-continuity/

Ultra-leftists are quick to complain that PSL's tactics are clearly not "producing revolution", as evidenced by the continuation of imperialist rule in the US. But despite all of their supposed superior analysis, they fail to put forward a specific agenda that can accomplish that task, let alone actually carry it out themselves. In other words, why should anybody listen to a bunch of belligerent assholes on Twitter (as you have literally suggested), if they haven't even done the bare minimum of organizing a more effective alternative? Is the PSL building an organization that is up to the task of carrying out a revolution? Who knows? But at least they are building an organization, and one which is explicitly ML.