It was simply that I ended up with a lot of windows: an ide, a browser for the site I was building, the debugger for it (and I wanted to switch between them fast), my music app, the company mandated chat app, browser windows with google searches, file browsers, terminals and so on.

In the end it was much faster to use the switchers in more traditional managers like Gnome and while you can stack/tab windows they still take up space.

Finally, and I think most importantly, while I was using an ultrawide screen at the time, and it was definitely nice to be able to easily split it in two or three windows quickly, I mostly don't need a tileable screen.