You mean point out how the rumored iPhone design actually differs from most phones that are pure plastic-backed and reasonably praise an Android phone that uses plastic but uses it very well?
No, I don't think that's what Mac.World said "people like him" would do. It's not an all or nothing issue like you and Mac.World are claiming it to be. Nobody is saying that simply using plastic makes a phone feel cheap and flimsy! The HTC One X is an absolutely fantastic device inside and out, and I give major props to HTC for putting special attention towards refining the external build quality of the phone. They proved that plastic doesn't always mean cheap. And dare I even bring up the Lumia 800 and 900? Talk about stunning...
Still, that doesn't mean Apple gets a free pass. If the plastic sections of the new iPhone end up feeling cheap, then they should absolutely receive severe backlash for it. Still though, given Apple's (Jony Ive's) track record of thoughtful design, I'm optimistic that it will turn out fine.