I also understand that teaching how the sausage is made is a big part of their marketing strategy. That creates a little bit of a conflict where it's easier not to show the warts than it is to talk about how awesome things are. Companies that market in this fashion do the rest of the world a great service. They show us how things could be. We need to understand and acknowledge that conflict to keep a balanced view.
The only thing I found missing from the nice essay full of pleasing things to read was this: we do this to ourselves. It's not some evil corporate manager-types, although things can look like that. You can get just as stressed out because your stack is whack as you can because your schedule is whack. The schedule is this "external" thing you can yell at. The stack just wheedles away at you, minute-by-minute.
I've also seen a lot of successful teams slowly turn the screws -- on themselves. Ego takes a lot of forms. A little success can make you want a lot more.
I really, really like the calm competence view of creating technology. The best folks I've worked with were smart, friendly, easy-going, and calm. The worst ones were smart, self-centered, authoritarian, and chaotic. Oddly enough, people who aren't-so-smart fall equally in both camps. I've seen some really good teams where nobody looked like they knew a lot. They just made it work and had fun doing it. I've also seen teams that should be building the next Mars base that weren't able to pick the toppings for their next pizza order.