Geee, I honestly hope airplanes are not really built like this nowadays. Are you an informed insider on Boeing subcrontractors or are you just guessing ?
Do you have any reason to believe otherwise?
Factory assembly line "droids" invariably clock on and switch off...."i'm paid to make xxxx , not to think" is the ruling mentality.
Those with a higher IQ ,invariably move on. It's always been so,in a repetitive production environment.