eh I'm going to take a wait and see approach.
The early alpha versions of COSMIC I really liked but over time with each new Alpha release it just felt...off? like kinda leaning into GNOME "please don't actually customize me" territory? and there were a couple keybinds that just weren't there. also it felt like it was getting slower with each release.
That being said I think if you just want a very simple DE with the option of good tiling then COSMIC is the way to go. It's been awhile since I tried one of the previous alphas so if his release really is the shit then I might consider switching my WM to it.