Sort of like the Touch Bar on MacBook Pros (which I have). Yeah it’s awesome to have on select apps like Photoshop, Safari, etc but it’s in no way so valuable as to build a whole product around - like this phone is trying to do.
You can take the Touch Bar away from me at any moment and I won’t mind.
Unless apps deeply integrate with this folding capability etc its just a gimmick that I expect will die pretty quick or remain a very niche product.