What is it with all this personality cult about founders, CEOs and CTOs nowadays? I thpught the cult around Steve Jobs was, bad it pales in comparison to today.

As soon as one person becomes more important than the team, as in the team starts to be structured around said person instead of with the person, that person should be replaced. Because otherwise, the team will not be functioning properly without the "star player" nor is the team more the sum of its members anymore...