I don’t see how your argument applies to Apple‘s transition to Liquid Glass. Apple only did incremental design changes for years, IIRC this is only the third major UI/UX iteration since the early 00s.
UX is not timeless, features emerge or go out of fashion, user behavior and expectations change, the hardware on which the UI/UX is operated changes. You only can incrementally evolve your ui/UX so far, as you can’t know what the future will look like.
Liquid glass is objectively worse than what came before it. It's literally harder to see what the fuck is going on, and everything takes more time to do.
There are zero legitimate benefits to it. It's just neat and cool, which is a very poor reason to do something.
UX is not timeless, features emerge or go out of fashion, user behavior and expectations change, the hardware on which the UI/UX is operated changes. You only can incrementally evolve your ui/UX so far, as you can’t know what the future will look like.