No. It is natural and true. Intelligence Augmentation is already there, in the form of the internet and our array of portable computers, which give us access to any information or computation we know how to find or express. We are already some distance to Stross's Manfred Macx (from his novel Accelerando) - lost and slightly bemused when disconnected from our external brain. It's not so obvious yet, and most of us still have some independence, but those of us who know how to use the web are lesser people without access to it.
It sounded to me like Don Norman had already accepted that idea to the point that he didn't even realize it was a choice. He worries about a future of greedy carriers controlling our phone-brains. I worry about the fact that our minds could become so beholden to devices that, regardless of whether those devices are open or privately controlled, we diminish the depth of our experience and our tendencies towards reflective thought.
If drugs were available that increased our abilities but made us less thoughtful, would you accept that without deliberation? Would it really be better if those drugs were easy to make at home or handed out for free rather than sold in stores? This is already happening with Ritalin and "smart drugs". They improve our ability to carry out mental work but diminish our ability to reflect on what we are doing.
"Smart" drugs and phones are only so in terms of instrumental reason, not in terms of creativity or contemplation of ends.
Technology is what separates humans from the rest of the animals. As time goes by, we will become more and more dependent on our technology, and this is a good thing, because I with my smartphone or laptop can do things I wouldn't be able to do alone.
Internet access is becoming a fundamental human requirement; this need should not be overly exploited by corporations.
I'm used to crotchety old people complaining about GPS killing map reading skills.
Manipulators use phones, mails, memo-s etc. as remote control devices. And since manipulators are more often than not weak on substance, they rely on input from outside more than "creators", who have more inherent values to live off from.
I think he just got pissed by being blown out of the water because of his net-blackout.
An obvious way to avoid becoming beholden to service providers is to retain some independence from our devices. It's not like people didn't travel before the invention of the iPhone.