Honestly, the issue is that the other players are jealous of how good Bryce is at age 22. I honestly feel this is where all that "he has to earn blah blah" ******** comes from.
That players were willing to support a supreme douchebag like Papelbon over Harper (whom I really don't even find to be overly arrogant, just honest and team oriented) is very telling. Remember, he was hailed as the next huge thing when he was like 17. I bet players enjoyed watching him fail expectations until he shat all over them this year.