Nah honestly, these housemates in BBUSA deserve most of what they get.
A lot of it is part of the game. Amanda can give as good as she got and later on after the argument she was planning how she would work it into her game plan. Josh went too far yeah, but today it's all forgotten and it's on to the next argument. This current group of housemates are the most grotesque bunch ever on the show and are all just as bad as each other.
They weren't bullying, Amanda just got found out for all the lies she was spreading and got caught up in it.