I wonder how many players consider umpires their co-workers. I'm sure some do, players like Tulo and the like who value their relationships with them but I'm sure a lot of players would only truly consider other players their co-workers and would only show reluctance to criticize players not the umps. Since it's really not an unfair criticism in the first place, I don't really see the big deal. It's not like he's airing out dirty laundry or anything. He's just calling it like it is from the safe distance of retirement.