I have a friend who believes this way. If he doesn't stop telegraphing that literally every other distraction in the world is more important than me, we're not going to be friends much longer.

My boss at one company would call meetings with an agenda that he set and then step out of the meeting to answer phone calls from his boss. Then six or eight of us sat around trying to figure out what to talk about without him not there. Tremendous waste of time. Several man hours per incident. And if not for that personality flaw I would have called him a good boss.