Why does Apple keep trying to replace spaces?

Why does Apple keep trying to replace spaces? I watched a few demos of the most recent incantation, Stage Manager, and it looks like just another bad replacement of the original spaces.

They did the same thing with dashboard.

I agree, Apple should invest in TS3 !

Since they removed native spaces when lion released and traded it for “mission control” multitasking usability has been rolling down hill. To this day they haven’t learned from their mistakes.
What they SHOULD have done is given people the choice of how people want to manage their own personal machines and implemented the facility to have both a linear layout and a grid layout.
Why they traded one for the other and removed choice is baffling, and in my opinion it was probably the most asinine move the macOS team ever made in terms of usability.