Eh, I prefer KDE. It’s fairly uncluttered unless you actively mess with it and want it, whole Gnome is pretty ruthlessly “our way is the right way”.

Once upon a time they only allowed virtual desktops to be in a column. Someone decided that columns weren’t for everyone so obviously make it only be in a row. Despite ages of most implementations supporting a grid layout.

Window title search. This is fantastic for managing a lot of windows. I wish KDE could get better by using screen reader facilities to let you search window contents as well, but having the facility in show windows view at all is great.

Their window tiling is less capable even than Microsoft windows.

Any attempt to customize means extensions, and they seem to break the interfaces the extensions need constantly, and I had to face the reality that every update had me searching for a replacement extension because they broke one that want maintained anymore.

But either way, the open desktop shells are better than the proprietary ones.