This would absolutely be enough to upgrade, barring some stupid sacrifice like the battery now being half the size or something.
Especially for the only model in their lineup you use with a pen. Can't begin to tell you how often lines at the edge of the screen get fucked by the curve.
Definitely a failure on Microsoft's part that will make anyone wary of trying the inevitable foldable and slab phones they'll release. You don't have to declare a Duo 3 is coming or anything right now, but you have to say that you're supporting the device that came out less than 2 years ago.
Finally. This is my favorite side effect of the advent of foldables - more people seeing the big tablet landscape mode of apps, and thus the fact that so many apps are incompatible coming to light.
The front panel is finally flat.