I think engineers and users alike would love to see more bug--only
releases of MacOS and iOS. People still talk about how wonderful Snow
Leopard was simply because it was a bug-fix only (mostly?) release.
Apple's dot zero OSX releases have always been pretty bad, so yes Snow Leopard and the last iteration of Tiger look great by comparison. As an outsider I don't have fond memories of filing bugs with Apple in that era. The general opacity combined with corporate disinterest discouraged me to the point where it's been years since I've even thought about filing a bug.
I dread new iOS releases. Sure there are usually unwanted changes (e.g. text selection in iOS 13), but the bugs... iOS 16 completely trashed whatever database Siri uses to map text to speech, so using Siri to play a song is usually a miss. Most recently it's decided the name Ben is really the name "Mouse Face". That's left a fair bit of egg on my face as I interact with those two people in two very different contexts. Sure, I could file a bug, but it's just easier to stop using Siri (which was never great in the first place).
With Tiger I was trying to integrate LDAP (AD masquerading as OpenDirectory), and it turned out that OSX would just assign GID 0 to any LDAP backed user. To me that seems pretty fucking straightforward, obviously pretty severe. That bug report went nowhere (not even an acknowledgement) and if memory serves Leopard went out with the same issue.
I also had a polycarbonate MacBook for personal use around the same time. I ended up filling out the RAM slots and discovered that after a certain amount of uptime that playing DVDs would eventually cause a kernel panic. That bug report actually did get a response, but only one. I think the computer itself died before that got fixed.
As someone who went on to dick around with CalDAV and CardDAV, there were plenty of issues to be filed but it was never really worth the effort. But as with everything else, as bad as Apple is they're usually better than the competition. That's how I ended up replacing my recently deceased Intel MBP with a new ARM one.
So long as market share holds I don't think Apple's got much incentive to reform. Although given that Tim Apple seems hell bent on pulling a Gil Amelio (my new MacBook SuperproairMax 15.323456" with the all new M-Centris really truly pro max upper bound superlative CPU sure looks great on the shelf) who knows how much longer that'll hold.