I don't think you're engaging with the GP's ideas in good faith. Yes, capitalism lifts people out of poverty at an unimaginable scale, but the GP's contention is that this is only _for the moment_. According to the GP, the end state of capitalism is a sudden, drastic drop in the labor class's material conditions (which probably looks a lot like societal collapse). Your contention that "But it's good now!" is exactly the kind of logic that GP is railing against.