If substantiated this is quite damning.. QA at Boeing and the door plug
Personally I'll not board a 737 assembled in the last 10 years, I know the odds of an incident are still small but sod em the company needs to be sent a message and the FAA also who have been complicit in allowing Boeing to sign off much that should have been independently audited.
Regarding the 737 itself, I regard the MAX versions as an over stretch of an existing design that should not have even been built and rather the 757 developed further, but the MAX made sense to the bean counters that seem to have been in control of Boeing for the past couple of decades