If one chooses to play an RPG, one should be aware that, in this genre, immersion takes precedence over QoL features.
Disagree with this!!!
Oh c'mon. With all due respect but let's not hide behind a bush. It's called RPG for a reason, Role-Playing Game. Role-Playing (=immersion) is the core concept of the genre, of course it takes the utmost precedence over everything else. This doesn't mean it must have zero QoL features, it still needs to be fun, but still, immersion takes precedence.
Otherwise, go to a renaissance fair or to a LARP while driving a scooter between the tents because "it's a quality of life feature that lets me move faster" and see if the people there are of your same opinion.
The current iteration of fast travelling in this game is exactly like that scooter. I can refuse to use it but it's still there, parked next to a horse. It's a bit difficult to stay immersed in this scenario.