Not quite a strawman. It was a rhetorical question in an attempt to make people think about how they would respond to the costs and benefits of voluntary work reduction if only they did it and not other peers.

Also, I have seen this line of argumentation. In a thread less than a week ago, somebody said how he found it unfair that I or others might work 60+ hours and he only work 40 and that pay scales should and job promotion abilities should be equal so he didn't have to give up his life to compete against those of use that had a different set of priorities (my terminology -- his was a little less forgiving). People choosing 32 hours a week would be upset to get passed up by those choosing 48+ hours. It's natural.