That would destroy the left’s “bourgeoisie/proletarian” false narrative, to point out that all people who work regardless of income level are the true “working class”.
The word that “proletarian” is derived from meant someone who didn’t work at all and possessed nothing, and only produced offspring. So Marx created the lie that the “proletarians” (our “taking class”) ever were the workers, just to serve his bizarre narrative.
Marx was a putz.