pelosi + co aging out just means a new crop of corporate democrats take over. the machine does not depend on individuals and there's plenty of young ghouls waiting in the wings.
'progressive' is pretty much branding at this point. someone can call themselves progressive while supporting weapons shipments to a genocide and opposing medicare for all because it's 'not politically feasible'
the label does no analytical work at all.
I'm assuming "tankies" are well-versed in this
they tend to be, i'm an anarchist and i've had many mls work with me in a positive way locally over the years.
I'm curious how you see that coming about short of a full-on revolution.
i did spell it out in that same statement, but maybe it was not clear enough.
when i said 'organizing and dual power building' i'm thinking of things like mutual aid as entrypoint. the idea that building networks where people can take care of eachother outside the market both meets immidiate needs and builds the relationships to make future organizing possible.
the ELI5 version would be summed up as 'build things that work outside the market, make peoples lives better now, demonstrate that another way of organizing is possible. 'voting' may be a tiny sliver of your time in the year, but electoral politics takes an inordinate amount of resources and time. despite all that effort any one election can flip the script on decades of work.
i could recommend reading material if you're interested in de-naturalizing some of the operational assumptions of capitalism.