Others have said this well but I’ll emphasize that the article doesn’t present the case that it’s failed or failing – there is a ways to go to find that out. If their service starts to suffer, then we have a signal, perhaps.
This may turn out selecting for the right people. I’ve learned as a manager in a growing company that a lot of people really like traditional hierarchy, and for understandable reasons. I’ve learned to respect and work with that. It’s not my way, per se, but I get it.