Does that imply that Linux is not stable? I've had my Arch installation for a full year and it has never broken down on me. No package has ever broken, and updates are always smooth thanks to pacman.
Meanwhile, I can recall a handful of instances where bugs slipped into the macOS userspace in the last year (and made it to the front page of Hacker News)
The desktop environment is not, no. Various applications one is likely to run on it are not, compared to some closed-source alternatives, including those provided on macOS.
Heavy Linux on the Desktop user for about 10 years, here (~2001-2011). I still try it periodically. I see a lot more bad glitches, X/Wayland crashes (may as well be a whole system crash, on a desktop), and application crashes, on Linux than elsewhere. I find it's most stable when I build up from something minimal and hand-configure everything, but I just don't have time for that anymore, and stopped finding it entertaining years ago.
I think I've almost never seen someone connect to a projector from Linux without some kind of glitch along the way.
My Linux machine on the other hand has never even once done that.
So many variables (mainly who's using the computer and for what) go into this that its impossible to speak for everyone, but yeh generally speaking macOS is more stable than linux. You might have experienced more stability, whereas someone else might have experienced more control using macOS than on linux.