I think socialist's best chance of getting a bigger social safety net, a wealth tax, a Green New Deal, etc, would be to talk about these things without mentioning the word socialism
At least until a few more generations die off
FWIW I'm not a socialist because I think government is incompetent and I would never want those fools to own the means of production but I do think we should do a better job of taking care of poor people, the planet, etc
As for how this happens, I don't really care but I have very little faith in the government's ability to do any of it. If Jeff Bezos wants to house the homeless in exchange for massive tax breaks, fine by me.