I had to laugh when a certain truck analogy was deployed to bolster the term post-pc era. In a time when a large portion of the population demands what is effectively a truck to convey school children and groceries, the truck analogy became its own running joke.
People DO want the power of a full Mac in their iPhone or iPad, witness filmmakers striving to make a film on iPhone, or musicians recording albums, including vocals on iPhone.
Technology just can't deliver what we want. Pretending computers are now trucks is as self-delusional as justifying a four wheel drive as a daily driver. When I see school children and groceries in a vee-dub, I'll believe in the post-pc fairy.
Right now we have subset-of-pc because the size of the device precludes full features, and that's just fine by me. There are myriad situations I wouldn't trade the near-Mac in my pocket for the real thing in my backpack or on my desk, but I'll always be wishing it had the features of full Mac.