It really blows my mind to hear opinions like this because my viewpoint is so overwhelmingly the opposite. To me it seems like the clear next step; we have phones in our pockets and tablets in our homes. What if we could combine them to get the best of both worlds? The biggest issues I’ve heard are durability and price; both things that plagued early smart phones. You dropped your iphone from 2 inches or let it touch your keys for two seconds and the screen is ruined. The iphone 1 was $500, post subsidized, something unheard of back then.
Both of those are solved now and I’m sure in time foldables will do it as well. It might just end up taking apple hopping on board to really bring it to the mainstream like how they’re going to do with their VR set.