There are two pretty basic problems with this line of thinking. First, the idea that you cannot create on a smartphone or tablet assumes both that the software on the new device doesn’t change and that the nature of the work won’t change. Neither are good assumptions. You begin by making the new tool fit the old way of working, but then the tool changes how you work. More importantly though, I think the whole idea that people create on PCs today, with today’s tools and tasks, is flawed, and, so, I think, is the idea that people aren’t already creating on mobile. It’s the other way around. People don’t create on PCs – they create on mobile.
If you want more ammo for the “can’t create on mobile” argument, here you go!