That setup requires you to always have internet. It also requires you to have a remote PC somewhere where you develop. The Ipad is little more then a screen in that case. In contrast I use a Surface Pro and I don't even have a desktop PC.

That's the difference between these devices. One is a fully fledged computer where you can do whatever you want on it. The other is a glorified teletype terminal. It's fine that the iPad Pro isn't a fully functional computing device but the thing that is wrong is Apply positioning it as such.