Right, so you bet the under, Max is throwing a great game and the Nats are up 6-0, Martinez is comfortable with the lead and calls out the dregs of the bullpen, putting your cash at risk. Now you're sitting behind the dugout barking at the manager about a game that he's about to win. Sounds great to me but I can see the players and coaches not being happy about it.
If I'm sitting behind the dugout within earshot of the managers and players it means I've won so many bets chances are I'm not going to be in a mood to scream at anybody. But if I did do some barking I don't think it would affect the coaches and players happiness one way or the other.