eh. The guy is entitled to his opinion. As it is, a lot of games get played this way. A lot don't. Blaming (or praising) the system for this is silly. Almost all RPGs are based upon the premise of "kill it and take its stuff." (KIATIS) And we can point at Space Invaders for an early example of video games doing this, so DnD is hardly alone. Heck, its in the literature. From Gilgamesh on forwards (although the better examples go further than this.)
Wouldn't worry about it, the guy is obviously a recent grad from journalism school looking to cause controversy and get a bit of notice. Although you'd think he'd pick a bigger topic, one likely to garner attention from a wider audience. He probably thinks he's hard hitting and uncompromising. Once again I say "eh."