Indeed. And it stems from the illusion that what works in solo/small teams/scrappy startup works the same when you are bigger, and that a developer can take over all the corollary work to the actual product development.

And yes, a dev that's able to do that properly (stress on properly) is indeed a signal of a better overall developer but they are a minority and anyway as orgs scale up there is just too much of "side salad" that it becomes a separated dish.