This thread is absurd at its core. Sure we have some interesting discussion but the original premise is pretty silly. You can look at any auto manufacturer, large or small or in-between, and find something to pick at: design & engineering flaws, poor build quality, poor fit & finish, bad reliability, recalls, etc etc ad nauseum. (If you are looking for something, you are likely to find it.) You can also look at any auto manufacturer and find something to applaud: fuel economy, reliability, affordability, utility, quality materials, styling, etc etc blah blah.
If I buy a Mazda 6, does that mean I think the Camry is junk? That I am a Mazda fanboy and have convinced myself that the Mazda is far superior to the Toyota? Or if I was shopping for a small SUV such as Honda CR-V or RAV4? If I choose one or the other, will someone assume that I am biased in some way? Or was it purely a financial decision because I could afford the nice, gently-used Honda?
I have not yet owned a European marque. So far I have owned AMC, Ford, Ford, Ford, Mazda, Toyota, Chevy, Chevy. The only major failure was the 1965 Mustang transmission broke the output shaft. Literally, that's the only serious trouble I've had with any of my cars. The truth is, I have acquired all my vehicles in good used condition, taken good care of them with regular service and needed repairs, and not abused them. That's all I can tell you about what is behind my good experience with my vehicles. Pretty sure it's not because the 1992 Thunderbird was "superior" to the 2006 Tacoma.
Apparently because all my experience with Japanese cars has been good, I am obligated to believe they are the best, and that American cars are [censored] (one broke down on me!) and European cars aren't worth the gamble (the unknown factor). So I will only buy Japanese cars, right?
Actually, I look forward to owning a BMW or Mercedes sedan someday after I have played out the Corvette experience and ready to move on.