Having had a career in aviation maintenance I suspect the majority of these issues are more about maintenance and preventative maintenance (or lack there of) more than a Boeing issue. Especially if the A/C has been in service a while.
You really can’t place blame on your car manufacturer if you had the oil changed at a private shop and they left the drain plug loose right?
A lot of hands on those planes when they’re in the field.....or there are supposed to be anyway.
Just my 2 cent
Roger that.
With 45 years in aviation, that's my take on this also.
Not a Boeing apologist, but the blame is mainly in the realm of maintenance, (or lack thereof).