I use what I call “pseudo DeX” on my Galaxy Tab S8+ constantly. It’s basically the entire DeX laptop like UI without the requirement to use an external monitor (there’s an actual name for it I can’t remember).
It’s what Stage Manager on iPads should have been: a regular, boring laptop mode to make multitasking on a large tablet screen usable without Apple unnecessarily trying to put their own unique spin on it.
Funny you mention stage manager, i remember the absolute online letdown/meltdown that happened when it didn't ship with the iPadOS version it was scheduled to. The other day i encountered the button for it and completely forgot it existed, but after launching it, I remembered how useless it is.
It’s what Stage Manager on iPads should have been: a regular, boring laptop mode to make multitasking on a large tablet screen usable without Apple unnecessarily trying to put their own unique spin on it.