The important question becomes can you stack the window decoration "tabs" of different apps into a single stack of tabs like in BeOS?
Demonstrated here (animated):
https://www.haiku-os.org/docs/userguide/en/images/gui-images...
This is what we needed in our OSes instead of Firefox tabs.
I tried to install a quick VM to answer this exact question but I had some difficult getting it running in Gnome Boxes.
Yes the UX is virtually the same
I used to run fluxbox in the early 2000s. I greatly miss tabbing any windows like that.