You can't vote something into law that violates the Constitutional rights of other people, no matter how big a majority you have. Those rights are guaranteed to every citizen and neither the state nor a majority vote of its residents can take them away.
The judge ruled that Prop 8 was unconstitutional and, if it is, then no amount of voter support for it can justify it being on the books. That's not tyranny, that's how things are supposed to work.
Oh, hey, I know, let's get 7 million people to vote in favor of bringing slavery back and repealing womens' suffrage. It's okay because that many people couldn't
possibly be wrong and it's perfectly fine to let an already privileged majority decide which rights they'll allow everybody else to have.
