I think the main dilemma could be a bit different. It's true that the wiring harness is already proven with 737 NG. And it's probably true rewiring 737 MAX is

I think the main dilemma could be a bit different. It's true that the wiring harness is already proven with 737 NG. And it's probably true rewiring 737 MAX is a higher risk than doing nothing. But IF this issue causes an accident without attempt to fix it, Boeing as a company might never recover. Even one such case could be enough. So both not doing anything and fixing it carry a huge risk. Not fun to be Boeing these days...