But sure, they must have done that because of their race and gender, not because of the massive potential increase in profits.
Safety and quality are a product of systems, processes, and policies and not individual skills. Mistakes will always be made even by including cishet natively english speaking upper-middle class white men. No good manager should expect individuals to be able to account for issues all on their own.
In Boeing's case, the problems are very obviously management compromising quality by encouraging corner-cutting for reducing costs to increase profits. It worked for a while because Boeing had the redundancies in processes to catch errors before they had an impact, but eventually they compromises were too much. Tell me, what does this has to do with race and gender?