Indeed, they're talking about the opposite extreme from the usual problem we all bemoan in here, which is JS devs being determined to use the newest shiniest thing as soon as it's been announced, instead of being willing to continue to use what they've always used and to wait until the new stuff works across all browsers. This article really surprised me, in how far some are apparently going in the opposite direction. I'm very surprised the baseline mentioned is ES3 rather than ES5 or 6.

The GP's comment - that we have to upgrade our hardware because devs are "anorexically obsessed with lean code, and find complex dependancies too confusing/bothersome" - is surely the exact opposite of reality? We have to upgrade to faster hardware because the bloat slows everything down!