Oh, you sweet summer child.
Who do you think "private supporters" are in Saudi Arabia?
And no, I don't think anyone with anything resembling power or wealth in Saudi Arabia supports human rights.
HRW execs admit via email to the editor in chief of a nationally respected magazine that they raise money by bragging how tough they are on Israel. And then they are tough on Israel, and you think it's a principled stance. Maybe they just have profitable principles, I dunno.