Why not say 99% if you're just pulling a number out of your ass.

and all the over production that ends up in landfills

Overproducing food is fundamentally good and there is not that much overproduction of other goods. Clothing sure but that is not a massive percent of global labor.

If socialism is that much more efficient than capitalism why is every socialist country not absolutely flourishing with 1 socialist worker reaping the same benefits as almost 7 capitalist workers?

(Btw I spent yesterday testing sewage samples and I’d do it for free if I didn’t need money to survive so miss me with any ‘how would we convince people to do gross work’ bullshit)

if 'people will work for the joy of work' was a reliable way to run an economy wouldn't you see capitalists who aren't reliant on wage labor choosing to work? You don't because economies function by the norm not the exception and most people would rather relax and maybe make art than voluntarily do a shitty job that has an abstract benefit to society.