I worked at a publication once where the new boss made us redesign our cover logo on deadline day. Even though we had a newspaper to put out by 5pm. The exercise was about as successful as the Yahoo weekend logo.
There are a bunch of things that are worth discussing, things that the Ars Technica link above touches on, and things that irk the hell out of me as a project director and a designer. But the comment in Mayer’s post that gets me the most is this: “So, while it was time for a change, it’s not something we could do lightly.”