Reliability issues are a problem, but that's all within reason I think. If they repair for free.
The issue with Mac is they are too expensive and a lot of the regular, non-iPhone stuff is languishing.
No, when your product doesnt work, that is unacceptable.
Consider your statement as it would apply to cars for example: they are in constant need of repair, tweaking, maintenance.
Butterfly keyboards have never been a problem for me, the issue is really the rate of problems, how they are fixed, who pays for it.
This is engineering, having something fail is not acceptable.
No. Engineering is not about 'zero failure' at all. It's about characterizing the failure properly.
Have you ever had the pleasure of working on a physical, manufactured product? There is no such thing as a perfect run. There are always defects, there are always failures for any product at scale.
100% of Apple products have a measurable failure rate.
The only Eng. problem where we shoot for 0 failures are a) Space Systems and b) Nuclear tech. Maybe some other things.
But even in Space and Nuclear ... there's still a tolerance!
We launch people into space with some kind of estimate as to the likelihood they will all die.
Not meeting specifications.
These did not meet specs. At least customer expectations.