It sounds like you expect others to do the heavy lifting socially. Did you make an effort to participate and involve yourself in the activities by taking the initiative to talk to your captain about these complaints? Were you ignored in the conversation about inclusion and diversity because you didn't speak up, or were they overtly malicious / bullying? Did they treat you like thin air because you have a pretentious attitude and expected them to do all the talking? Sounds like you were unpleasant to be around and no one really cared when you left because you brought nothing to the table apart from passive-aggressive assumptions about your teammates.

Food for thought.