to be blunt, i can't even find the arrogance in the quote you fabricated. are you suggesting that people who are considered tech savvy don't have an easier time navigating new technology?
Which isn't a polite thing to say no matter how you phrase it.
In the context of this article in particular, in order to bolster a flawed argument, 'normal people' are presented as people so stupid as to be unable to comprehend a second brand of telephone.
This is simply untrue, and to imply that people don't have the power to choose between two products, because 'normal people' are too stupid to use more than one type of phone is absurd.
If you have a problem with Apple's 30% cut of in app purchases, that's fine. But please use something a little more substantive than a silent, and most likely non-existent, underclass of sub-humans as your justification.
in fact, i know several "normal people" who'd probably prefer considering themselves "normal people". at the very least, as opposed to "computer nerds". which incidentally is a term i've never found offensive.
I just don't see why the author would choose to use the loaded term 'normal people' instead of just 'people'.
edit: Unless he was being lazy and hanging his argument on an unfair caricature.
Which I believe he was.