Honestly Apple could use some of those points considering how many little plastic parts they force people to buy.
This is my primary interest in this project. Given Apple's support life for Macs, I don't think I will ever use it, but I'd like to have the option the same way I was able to extend the life of my G4 iMac.
A lot of macOS internals are really a reflection of Apple's deadlines-over-everything, ship-at-all-costs attitude. Certain parts are great, because those teams seem to be great and are blockers, such as the kernel or the silicon. Other parts closer to the surface that aren't in quite as critical a path, all the way up to documentation... not quite as much.
Overall they do a decent job, and are certainly moving in a good direction security-wise (although not privacy-wise). It's just clear that many of their teams are stretched extremely thin.
What’s the point in having a big release every year if takes six months to sand down all the rough edges?
30% cut of app store, icloud, apple+ TV, Safari users, Maps users, Incremental Market Share.
Realistically lots of people could end up preferring Linux over MacOS, why risk it?