Switched to KDE Plasma last month and very pleased I can have square-corner windows again.

Agreed. Even Windows has some nice stuff when it comes to windows management IMHO. Every time I end up on macOS I miss the various Windows/GNOME behaviours e.g. window snapping to the right/left half, pressing the Win key to see all open apps, maximise buttons that doesn't put the whole app into full screen mode, etc.

I love gnome, at least how it's implemented by recent Fedoras. Whenever I go back to Mac I wonder why spotlight and mission control are two different functions