Cosmic started as a fork of GNOME. They worked on that for a long, long time before deciding to start over.

I think it’s the right call. I can see myself using it once it’s matured some more. The ability to seamlessly switch between floating and tiled modes is wonderful. The simplicity and intuitiveness of the UI and settings. They take all the right features and ideas from GNOME, KDE, MacOS, and Windows and made something that could be better than all of them. All they need is time and polish, and they seem dedicated to doing it right.

I am looking forward to seeing it evolve and am cheering for them.