That's true, Apple hasn't announced every single problem, yes, they have usually made security related information public, and there have been issues here and there they've gone public with such as the iPhone 4 antenna issues. There have been other times when they have pulled software due to bugs, or other potentially harmful things.
I've used Apple computers since the 80's , I've owned my own Macs since the 90's.
I don't think I've personally ever had an issue with an Apple OS not installing, but I've had buggy ones.
The two worse, that come to mind were Yosemite, and High Sierra. El Capitan, and Sierra changed things so apps broke and had to be updated by the developers, which could take a while. The OS itself, was usually OK. As Noted, Yosemite, and High Sierra, were the main two in my experience where the OS itself had some issues.
With the way Apple has been going with hardware lately, I've considered switching to Windows 10, or Linux, or a BSD, because I want more control over the hardware than Apple currently gives. So, I can say that I feel about apple hardware the way people here feel about the Mojave problems.