There's just no way for Apple to maintain and run comprehensive test suites for all the different software platforms out there, even "popular" ones.
That's why they release betas early -- that gives each project an opportunity to run their own test suites, however comprehensive they may be.
It's a little hard to hold Apple responsible when there are a lot of app teams in a better position to catch this than Apple, and apparently none of them did.
(Maybe it was a late change in Tahoe? Still, no one found it in the RC either it seems.)
No, this is possible, but again, just drain the bathwater of "all, everything, comprehensive 100%" while blocking the baby of glaringly obvious system-wide visible bugs any good 9x% testing would've caught.
That's why they release betas early -- that gives each project an opportunity to run their own test suites, however comprehensive they may be.
It's a little hard to hold Apple responsible when there are a lot of app teams in a better position to catch this than Apple, and apparently none of them did.
(Maybe it was a late change in Tahoe? Still, no one found it in the RC either it seems.)