[IIsi50MHz]

If you're not concerned about losing other animations, you can enable the Reduced Motion setting in Accessibility preferences. It completely removes that animation.

[mfontani]

Nope, it doesn't. It reduces it greatly, but it's still there. To disable it "fully" one has to disable SIP, and that's not a great idea.

Rather than "reduced" motion, I'd really look forward to "no" motion.

Like I had with i3wm... practically _instantaneous_ switch between spaces/virtual desktops.