I feel like this is basically how humanity operates as a whole, and that seems to produce usable results, so why the heck not?

No problem, said von Neumann. https://www.scottaaronson.com/qclec/27.pdf

I've never seen so much money spent on a fundamentally flawed tech, since maybe Theranos. I'm really starting to doubt the viability of the current crop of quantum computing attempts. I think there probably is some way to harness quantum effects, but I'm not sure computing with inherently high margin of error is the right way to do it.