This design seems to cement the trend at Apple to position their products as consumer appliances, not platforms useful for development.
The problem is, there's nothing else out there. Everything is going to shit in one way or another. Windows is now a disaster, Linux was always a disaster in terms of user experience and isn't improving.
Mac OS was the last bastion of somewhat good, thoughtful design, user experience and attention to detail and now they've gone to shit too.
I'm honestly pretty baffled as to what keeps this meme alive, as KDE and GNOME are both very popular and provide simple, intuitive interfaces for the typical user. Plasma is only complex if you're the type that really wants to customize, but there its complexity is (mostly) necessary for its wide range of possible configuration. People have this idea that desktop Linux users are all a bunch of dorks playing around with Arch and tiling window managers all day and then posting their anime wallpaper setups on /r/unixporn, but that hasn't actually been true for a long time.
The settings UIs in Mint are easily way better than in Windows and Mac.