I have heard a few things from about RC from my FOs but he has always been helpful to me. Memorial day weekend he was covering trips for a couple of guys who had family plans. Who cares if a chief pilot wears a uniform in the cockpit, they can get snagged in an instant to deal with a variety of issues. Atleast if they are flying they can see some of the things we see on line every day. All of our chiefs are training guys get them out there as possible.
Good luck proving that. That's a load of bull-excrement. More likely, enough people called in sick that he had to pitch in.