All the “you can’t create on a tablet” stuff is FUD. There’s a distinct tradeoff there, but it’s not impossible. SunVox/GarageBand/Music Studio (depending on your preferred genre) all run on iOS devices. I can “do work” via Prompt from an iPod Touch, though it is painstakingly slow, and an iPad+keyboard makes it 90% as fast as a real desktop because all the compute resources are spent remotely.
I’d agree that there are limits to what a tablet/phone can provide (ArtStudio, even with a smart pen on the newest iPhone, is never going to touch the capability of PhotoShop on a contemporary x86+GPU with many times the RAM) but it turns out that limitations can enhance creativity. Like, say, if you decided to build a phone that was all touch screen…