I wouldn’t call central planning “Marxist”, it’s just better for many things. And Marxism is about trying to find the best solutions scientifically to the issue of capitalism. Namely a revolution and a restructuring of society by the workers “in their image”. And practice of attempting that and building that new society brought new innovations and ideas.

Also, the end goal for Marxists, like for all communists, is and should be a “stateless, moneyless, classless society”. Not in any “words mean different things” way. In a “there is no more class divisions, no more commodity production and capital, and no more state or hierarchical authority. Like anarchists want as well.