There are some good people in the org but the leadership sucks and are straight up revisionists. One of the co-chairs once wrote that “the dictatorship of the proletariat is the worst political idea put to paper” (paraphrased). The central committee has ossified and undermined democratic institutions within the party to ensure their continued staying power. I was in the party for a few years because it was the largest ML (ostensibly) party at the time and had international recognition through solidnet. But all we did was tailism for other progressive liberal orgs in our area and eventually just promoting democrats. I wanted no part of that so I left. There were good people in there who would push for real labor organizing, union drives, etc but those actions got no support from national and were sidelined constantly. The party as it exists has little revolutionary potential imo and acts as a sink for revolutionaries trying to get organized who just wind up wasting their time on some liberalism.
Edit: For those curious, here is the blog post where Joe Sims, current co-chair of CPUSA, says that the dictatorship of the proletariat is “the worst phrase uttered by a political theorist ever,” and also states that he doesn’t believe the USSR or Eastern Europe were socialist. He put out several of these blog posts around the same time and they’re all equally as revisionist, flat out misrepresenting the core tenets of Marxism.