This is a hypothetical question.
It can be applied to a high school or college situation. Pick whatever scenario that you want to use.
Working under the assumption that championship teams have a brotherhood and a unique chemistry that's required, can just one player on a roster who is universally disliked by everyone on the team disrupt and/or adversely impact that team chemistry and derail the team's goal for the season?
In terms of professional teams, there seems to be enough evidence to say no. Plenty of teams have won championships with a guy on the roster who was a pariah. But, what about high school and/or college teams?
Does it make a difference if the hated player is a star player? Is it then more tolerable and it's only an issue if the player isn't special? Is it easier if the player in question is a pitcher or position player?