The Republicans are capitalists. The Democrats are capitalists. To Marxists they are the same.
Meaningful, important distinctions can exist even when Marxists are unable to recognize them.
Social democratic reforms can alleviate the inequality and distribute the wealth more equitably, but, because it does not replace capitalism itself, it always falters.
Explain? Because systems ultimately fail , it’s no good? Longevity and risilience are worthwhile considerations when designing and economic system to govern a civilization, but uktimate fallibility does not invalidate them entirely. More to the point, what evidence is there that Marxists societies do/would last longer?
If that dog could talk the only thing it would say is “kill me”.