It's disrespectful to us. The Red Sox should be worried about winning this game. If you're worried, you pinch hit for the pitcher at that point.
Maybe, unless you think he's the best pitcher available at that point in the game. I know they have a pretty good bullpen, but I think it was a solid baseball decision to keep him in for another inning, maybe two. I don't think there was any disrespect either way.