I don't get this criticism. That's one developer explaining their own development style, not representative of the whole project. And that mismatch and self-centeredness you describe is present in every open source community I've ever seen. Almost every project is underfunded despite being used by millions of people, sometimes even billions. So in order to make any progress, the developers have to laser focus on what they're doing. For example KDE developers won't make progress on KDE if they drop what they're doing and start spending a bunch of time working on GNOME.