I think you raise some interesting points but I think that this just falls back into the failures of prefiguration and expecting resistance and revolution to grow out of an "organic" movement.
If we require prefiguration for our organizational forms, i.e. that we try and create the world that we want in miniature in the organizations we create, then we'll largely fail without a greater strategic basis. This is the thesis of If We Burn by Vincent Bevins, which goes into how these tenets of prefiguration for our organizations lead to them being ultimately too flexible and loose to take hold of national revolutionary crisises which better-led movements are able to take to their advantage.
This just sounds like the age old problem of relying and requiring "organic" growth to happen. It'll happen, it'll get us far, but it has absolutely never been shown on a large national scale to get us far enough to lead to a revolutionary overthrow of society. The party justifies itself by being a conscious organ for working class people to collect knowledge, theory, and practice under one roof which is able to coordinate itself and operate outside the bounds of what would be "organic" or occur naturally otherwise. It doesn't exist at the exclusion of organic left-wing growth, as that's very necessary, but instead represents a section of this organic growth which is then conscious of itself and able to operate outside the bounds previously thought possible.
Am I understanding this all correctly?
This meme was made by stonetoss, a known neo-nazi