All I can figure is difference in perspective is because such a large part of the potential of i-devices (or phones and tablets more broadly) for creation involves using them as a tool to get something done in the real world, and/or for the kinds of creative tasks that get overlooked by the hackerspace crowd (running an Instagram, say,
involves lots of creation; tradespeople and home DIYers routinely use phones and tablets to help get things done in situations where a laptop wouldn't be a useful alternative; that kind of thing). Desktop computers are mainly good, outside of industrial uses, for creating
more stuff for computers. I-Devices shine when most of your task's
not on a computer, and the computer's just one of many tools at your disposal. If "creation" is making stuff for computers, they seem bad. If "creation" happens in the real world and the computer's just a tool to help with that, and nothing more, they're pretty appealing. A smart slab of glass packed with sensors that can
become different tools. Super handy, and a "real" computer couldn't replace it.
For most creation-oriented tasks I do that aren't computer-centric, I'd much rather have an iPhone or iPad than a laptop. They're great tools for creation & work, just not so much for creating stuff for computers, certain exceptions aside, and for those they're mostly just about as good as a laptop, or even not-very-good but usable in a pinch, not better.