'Muggles' I prefer, at least it's sincere. The problem I have with the term 'normal people' is that it is a polite way of referring to 'the unwashed masses'.
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.