I am always willing to be convinced from someone that has the data ready. That's what intelligent people do. Yes, I have known other quality "engineers" that don't have a clue.
I have been through ISO 9000 quality regimens (leading the second one) in two companies and qualified them.
I observed the short marriage between Chrysler and Mercedes Benz and have the OPINION that M-B suffered quality for it. However, there also was a culture clash and a problem in that M-B installed their own management over Chrysler departments and it didn't set well.
On the plus side, I like that Chrysler designs are very innovative and deliberately different from other company designs. Note the Prowler.