I think you’re using your own personal experience with Marxists in your area as a blanket to generalize. Marxists as a general rule don’t spend all their time hypothesizing about future society, but practice labor organization, protesting, and building dual power (similar but not the same as prefiguration). The Black Panther Party, Marxist-Leninists as we all know, was famous for directly going out and feeding people, and protecting them from the State. The Party for Socialism and Liberation is at the forefront of the US-based pro-Palestinian protests. Marxists do get the here and now done.

Your personal experiences are giving you a malformed view of the broader US-based Marxist movements, which are recovering from the heights of the Red Scare. They are also missing the global context, Marxists currently govern many countries like China, Cuba, Vietnam, etc, and China in particular is becoming more and more important in the world context, which has an impact on US-based organizing as well.

I think you’re running into resistance because you have painted Marxists in general with your experiences of one subset of the particular.