hat said, there's no way a group of a few thousand beta testers can anticipate everything that hundreds of millions of endusers may be doing with their Macs.
Sorry but I disagree. Firstly one argument for the Apple tax and their relatively limited range of products/control of the OS is exactly that they CAN make a better fist of it than a typical Windows machine, that could be high quality or dog excreta in terms of compatability.
Second, only a few thousand beta testers? From casually looking even at Macrumours it seems to be a metric F tonne of people bragging about using a beta milliseconds after it comes out [well you get the picture...] Maybe not all betas are equal or distributed to the "masses", and I guess out of that F tonne of hobbyist testers, most just use it for the latest emoji pack and bragging rights that they are on build 5433 rather than current stock. The why to such is best left to psychologists to wonder about.
But release after release with Apple's legendary software QA and attention to detail, it seems that there are many issues that are hardly obscure, e.g. Calendar closes with an error if you enter a date of 13 March 1975 and write in the subject line of the entry "Perkele".
If only a fraction of Cook's nose for nickel and diming could be used on software QA, maybe even focussing on the important real core stuff and reliability then "woohoo another 150 emojis and a talking head animation program" we might actually get some half-decent release.
I've been only using Macs personally for a shade under 30 years. Before that I used them at work, swore AT them and not BY them, as those lovely bombs used to love coming just before production deadline. Many commentators have noted that there was a golden time for stability and some feature development. Now it is a tacky lottery. There are no doubt some features I personally don't care for, or use, that I accept might be useful for some. A lot of "new stuff" seems to be polishing around the t--d though.
Have a sprint for stability and get a bedrock back again. And fix the bloody Finder for once and for all. It's a joke of a GUI if you do more than click a file on your local drive every so often. [slight hyperbole, but Finder users will know it is not rock solid by any means, especially with those new-fangled network accesses].