If something is not noticeable when it gets "better", but it leads people to notice other stuff is "worse" over time, then I'd argue it's not actually a good thing to get.
Imagine if someone said "this food won't really taste better to you when you first eat it, but after 6 months you'll find other food tastes worse". To me, this would not be a selling point.
It's the same dynamic as with how we optimize for web pages speed. People don't immediately think that website responding 200ms faster is better. But they enjoy the experience more anyway (even if at some subconscious level) and they end up liking it more and spending more time with it.
With food also you could be incrementally getting better and better food and when you then try v1 it would taste bad.
It seems that we might also be noticing slight degradation more than slight improvement in general? No idea if that's true.
I don't think that's a good comparison.
I've often had new phones that are 'faster' but I barely notice the fastness until I go back to my old phone and realise that my finger-memory needs adapting because things take just a bit longer to load.
I'd assume it's similar for screen refresh rates.
I always wondered why Windows users didn't notice the jagged text in 2001 and see a Mac as obviously better. You don't know what you aren't missing until it's gone.
I didn't know how bad TV looked in the 90s. We watched a low res 19 inch TV from across the room. Did moving to HD make any real difference in our lives? Do we really enjoy TV that much more? Once the excitement wears off about 20 minutes into watching it, its still the same thing. If the story is good, you get into it either way and forget what you're watching it on.