At least in the fourth article, the one posted. I read the first three and found them to be largely unconvincing. I think you can like the flat look or not, like Material Design (barely mentioned, but brought up a few times) or not, and that's cool. But one of the main thrusts of his argument in the first three articles was that the defense of these designs was riddled with 'artspeak', a nonsense language used to dissuade criticism. I don't dispute it; I like Material Design (Android user here) but having watched the Material Design sessions from I/O 2014, I definitely got annoyed at all the 'artspeak' going on from the lead guy at Google (Duarte I think his name is). What's funny is that what rubbed me the wrong way about him was how 'Apple-ish' he sounded, so go figure.
But back to the first three articles -- they seemed riddled with a different kind of 'artspeak'. Churlishing comparing the simplish people imagery from Google with Children's books and comparing Apple's design to the child who can paint like Pollock didn't feel particularly high-brow.
Still, the over-arching point that I felt was useful was that criticism is not well-received at Apple (or Google from the sounds of it). That's a point worth dwelling on, especially since Apple in particular has the reputation of having the 'zealots' come out in force whenever anyone says anything ill of Apple. It was quite interesting to hear in the fourth article that -- unless I misunderstood it? -- there's someone at Apple whose job is to rile up the crazies when they get wind of that kind of thing on the interwebz.
But ultimately, the discussion about the problems of the App Store is more interesting. The 'race to the bottom' is something anyone with half a brain can see, and anyone who's a developer looks at that and must feel some gnawing fear. Maybe I'm wrong, but I feel like we're all pushed to mobile (if you're not on mobile, you're out of touch!) and when I look at the market, it gives me the willies. I don't think the Google Play Store is doing any better in that regard either. Worse, I don't have the foggiest idea of how to correct the problem, not even one that would take Herculean effort from either company to employ.