All operating systems have bugs, and Apple doesn't have the QA it used to have. MacOS has basically been exclusively trending down in quality for a while now, while Linux continues to get better.
What you have to realize is that what Linux distros are doing is inherently more complicated. They're making a general purpose operating system intended to run on every computer.
Apple is making one operating system intended to run on maybe 0.1% of devices. Oh, and they also make those devices.
And MacOS is still trending down in quality, somehow.
You're not wrong about the downwards trend in quality but we're still a long ways off from macOS or even Windows having the same level of QA issues that Linux does, on a regular desktop system.
Windows basically barely works, and I would know because I use it daily at work. Core operating system components crash regularly. My task bar crashes a couple times a day, and takes explorer down with it. Sometimes the start menu just won't open for a while. And also teams kills itself silently, and then I miss notifications because I'm not pocket watching the task bar.
At this point, Linux is very far ahead of windows in terms of QA. And other things, like aesthetics and intuitive UI. I mean, Microsoft has like 5 different application styles across their own built in apps.
I think a lot of people have just not used KDE or even gnome in a while. They're pretty good. Consistent, intuitive, stable.
What you have to realize is that what Linux distros are doing is inherently more complicated. They're making a general purpose operating system intended to run on every computer.
Apple is making one operating system intended to run on maybe 0.1% of devices. Oh, and they also make those devices.
And MacOS is still trending down in quality, somehow.