Everything is full of sharp edges. It's just a matter of which ones are more painful to you.
The author's inability to uninstall or fully disable AI features is one for Mac OS. Window management is a common one for people used to other systems.
Windows has many, with (again) AI features that are hard to get rid of, and attempts to coerce users to create an online account being two of the most prominent lately.
So yeah, KDE's NetworkManager frontend is a little janky sometimes, and they should fix that. Is it worse than trying to coerce the user into using services they don't want to? For some people, probably. For me, no.
The defining difference for me is the number of affected users and how much the issue debilitates the system.
Should AI features be easier to switch off? Sure, no argument there, but a problem like a network interface vanishing, breaking internet connectivity, and re-adding not working as expected is much more serious, even if it’s an issue that impacts fewer people. At least the system with unwanted features is still usable for work.
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I think there's a fundamental difference between having things you need to ignore (windows bloat) and having problems that prop up when you try to do things (linux stuff).
I think people are generally more willing to put up with the former.