That's always the problem with tech like this, it sounds good on paper but then it gets used as an excuse to not optimize.
Going into this gen I naively though devs would use upscaling to enhance games running at native 1080p or 1440p. Instead we are seeing more and more games, specially UE5 ones, rendering at under 1080p, sometimes as low as 720p.
It's the same with this, on paper it sounds like a compelling way to make your 60fps+ appear smoother, now we are seeing it used to target 30/60fps.