I think it's fair to say that a politician who votes away online privacy for everyone has explicitly waived his or her own personal right to that online privacy

I think it's fair to say that a politician who votes away online privacy for everyone has explicitly waived his or her own personal right to that online privacy. Everyone else may have personal views that are not reflected by the law. That's a good reason to not make them suffer for the sake of it just because of what the law says. Politicians have the power to directly vote for or against laws. They are the only people to whom this caveat does not apply.