Random thoughts, but I could see Nintendo doing unexpected things to 'compensate'.
After all we waited years to have "folders" and new themes.
There's still a world where they decide to, somehow, allow some Mariko overclock though an update that would only be available on OLED models, showing some performance improvements in some games (look Xenoblade 1/2/3 at 60fps now!). Not on V2 models which are too similar to Erista models to avoid confusion.
Maybe as a bonus fos NSO subscribers.
Or as a new TV-only model special feature that would be at least 4K compatible - which could also happen on OLED docks through an update, because we still don't know why that thing has an update option (or I forgot about it).
4K output wouldn't bring much improvements (if any) by itself, but still be technically better to avoid double upscale (from console then TV) on sub 1080p games, which are a lot; but maybe not as many if overclock allows for resolution boosts as well?
It'd make sense to market those improvements along with the "4K" term.
I don't know. Sometimes random Nintendo does cool things.
In any case I still think we're not ready for how amazing Zelda will be.