As an after-the-fact patch for a Switch game, that would be good enough. If ToTK released alongside Switch 2, and acted as the major launch title to showcase the new hardware, I don't think it would be good enough. As good at ToTK looks for a Switch game, Drake is a generational leap over TX1 in both performance and architecture, and using a Switch game with a resolution patch as your flagship launch title would seriously undersell the new hardware.
To me, the time has clearly passed for a May launch, but there was a time last year where I thought a Switch 2 launch alongside ToTK in May 2023 was a possibility, and in that case I was definitely expecting a much more significant update than resolution for the Switch 2 build. My post was in reaction to discussion about whether Nintendo should announce the new hardware before or after ToTK, but I was more describing the change in my thought process than anything else. Basically, it doesn't matter whether Nintendo announce Switch 2 before or after ToTK launches, because ToTK isn't a Switch 2 game.