I'm sure there are plenty of people who have called out if there was a bi-weekly meeting that was going on (which is essentially what is going on here, that would be 26 meetings a year). If it was a bi-weekly meeting, yes, I have called out of work sick before.
It's not like he's calling out sick from a post season game, or a Yankee game, so I don't think it's like calling out from a presentation. It's not even as major as a bi-weekly meeting, if you're going based on the frequency of occurrence.
If he misses his next start because he was hurt worse from golfing, fine. But that's not the case. I understand the frustration, but I don't understand the hypocrisy, because there's an abundance of it.