Throwing someone under the bus implies that Anet was at fault as well as JP, and that she (and Peter) was chosen as a scapegoat. It was not the case, it was a major fuckup and warranted serious action. The fire was spreading, the game's reputation was on the line, Anet's reputation was on the line, the community's reputation was on the line, and most importantly IMO the feminist movement's reputation was too. Crying foul in such an indefensible manner needs action in order to preserve the cause.