Because teams are willing to publicly take a stand for any other type of offender that he has paid his debt to society and deserves a second chance. But I'm sure they want no part of having to deal with what would no doubt be a public relations nightmare because people would be all over the team notwithstanding that they have no knowledge of the back story. Unfortunately, he has been wrongly labeled a "sex offender" and for one who has been given that label, there is no second chance in the eyes of this society. For a true pedophile, there arguably shouldn't be a second chance, because their recidivism rate is so high.
But this is a perfect example of how the system, with its obvious flaws, when left to run rampant because the victim and the defendent were both poor, allows a 15 year old to be coerced into a story that was not accurate, and a 16 year old kid to be tried and convicted as an adult. Because they couldn't afford competent counsel, there was no one there to take the police to task for their methods and to cast doubt on the "facts" and/or to keep this kid from being labeled for the rest of his life as something he is not, for a mistake they both made as unsupervised children under horrible living conditions.