It's generally a solid OS. The issues noted are specifically about the process of submitting apps to the macOS app store. A process that for iOS and macOs has

It's generally a solid OS. The issues noted are specifically about the process of submitting apps to the macOS app store. A process that for iOS and macOs has been notoriously confusing and problematic with regards to the signing process. You think you have it sorted... then boom! it wont pass signing validation and you cant submit to the app store. It's much better than it used to be though. And it's one of those things that you do once, get it working, then forget how you did it and come back to it a year later and it's confusing all over again :-) The dev tools themselves (XCODE) are actually pretty good.