Comment by pkulak

Sway and i3. But when a WM does it, you can mix different apps in the same tab group, and your tab key binds can be the same as your WM key binds. You don’t have to remember alt+h for tabs, win+h for windows, etc.

But I’m just busting your chops, don’t listen to me. I don’t even use i3/Sway, or use tabs at all. Everyone has their own workflow that works best for them.