Lila_Q

I think it was because Brax's 'us vs them' mentality. Every time someone outside the family asked any questions or offered to help they were (rudely) shut down by Brax. I found that really annoying. On one side he was painted as hero (who wanted to be part of the community) and on the other he was rude/mean to everyone including family members. The only family member that interacted with other characters was Casey - he was friends with both, the Palmers and the Walkers. It's the same with Robbo now, out of all characters on the show he is only close to Colby, Tori and Jasmine.