I'm going to agree with the industry professionals. Steve Jobs & Apple have had a profound impact on the gaming industry. What's the most popular game of all time? Super Mario, with its 40+ million sold? Turns out, Angry Birds has over 400 million downloads, with 12 million purchases for the iPhone, where it originally garnered its popularity. The article might have said this is not about sales, but impact... but you can't argue with a device that has brought a single game to 400,000,000 people, in under 2 years.
Face it, the detractors 'n' haters are merely denying that the definition of gaming has been significantly altered in the last few years. In a world where some forty million people are playing a Zynga game, at any given moment of the day, and there's an outright refusal to classify Farmville and Imagine: Babyz in the same medium as their precious Halos and Starcrafts and Final Fantasies...
The fact is, gaming is more than your favourite PS3 testosterone-em-up. Gaming is everything from your 180+ hour universe-sweeping Anime epics, to arranging fruit. The salad-em-up, arguably, is played by some 100 million more people than your favourite JRPG. Ergo, more people game by aligning peaches on their iOS touch-screen, then summoning Bahamut Zero on their sixaxis. So, in terms of man-hours spent gaming, I would wager a cumulative billion of 'em are played on an Apple device every day, and a fraction of that on a Nintendo, Sony, or Microsoft console. The only thing that might challenge Apple for cumulative gaming hours would be the PC/Laptop--and not for retail games, but for browser/flash games.
Take your "average gamer"--pretend that, today, this gamer games for exactly one hour, and spends that hour gaming a condensed amount of time for each gaming platform, to represent average time spent. The gamer would spend about 30 minutes of that hour on their iPhone, ten minutes playing a PopCap-style flash game in a browser window, ten minutes playing a Facebook-embedded game, a few minutes loading up an Xbox/PS3 game, maybe gives the Wii a coupla minutes--enough time for a quick Mario Kart, and then gets as far as turning on the PSP, before going, "nah..." and switches it off. Certain large-scale time-sink games, like WoW or Minecraft, might get a few seconds of play, too.
Anyway, it's not just accumulative gaming time that Apple has single-handedly swept up, neither. They have changed the entire business model of how games are purchased and the methods in which one acquires games. Sure, Steam and other content delivery systems have been around for six or seven years now (direct2drive even longer, I think), but the Apple App Store has become The Most Used Platform For Digital Distribution, outstripping Steam for downloading gaming content by, what, half a billion downloads? (numbers pulled from the University of My Ass, but the sentiment is there: the App store delivers more games, at lower prices, faster, quicker, and cheaper than Steam. The selection of games is wildly different, but as said before, it's still games that are being distributed.
Even as a handheld, the iPhone stole Nintendo's 22-year crown of stranglehold thorns. No need to really argue, as Penny-Arcade sums it up with their patented Macuahuitl-edged wit. Why pay €30 for a game you're going to get 8+ hours of entertainment, when you can get one offering similar levels of entertainment (if not, perhaps, as deep) for under a dollar?
Even indie development has been significantly boosted by iOS and Android. iOS moreso, thanks to Apple's tight control over its development and legacy. Just look:
Android is a total mess, so it makes sense for a small, independent studio to develop for iOS. You'll get better exposure for your game, better support for your development, and an overall more guided experience.
Apple changed the face of gaming, significantly. Much as Facebook has done, whether you respect it or not (I, for the record, do not--but I don't begrudge the existence of Zynga, even though they make their millions by ripping off other, less popular, games). Of course, if you solely define gaming as within the realm of seventh-generation consoles, then (aside from being wrong) your worldview of what constitutes gaming is sadly narrowed to the point of elitism. You can continue thinking that what constitutes a game is a $60 boxed product with a £100 million budget, but for the significant majority of other gamers out there who just like playing Words With Friends and Doodle Jump, Apple have by far and away been a bigger influence over their gaming/purchasing habits than the 'Big 3' combined.