I think the author is onto something, though I'm still not convinced these pockets give a nice line with much in them, which people generally care about. Dickies-type trousers tend to have a looser fit than the pictured trousers. The article photos with a phone held partly in the pocket aren't definitive.
There's a slight bulge from the welt of the pocket itself, which I'm still experimenting with, but with-phone is truly indistinguishable from without-phone when I'm standing up. Seated, there's a bulge at the side of the thigh if you really look for it.
Good work by the way, and I hope you change the trouserial (?) world.
I know of a few brands that buck this trend, but they're basically constrained to wealthy aestheticians.