I think this is really beside the point. Sure, oppressive governments will try to take advantage of it.
But nobody ever expected the new age of transparency to begin like the happy ending of a movie. It’s not going to be a perfect transition to us waking up and things will be all better. Not with humanity as imperfect as it always is.
At least with the governments claiming they’ve always been about the “human rights” knowing that their dirty secrets are being laid bare, they will at least have the opportunity to stop and reflect on what they’ve been doing since the Cold War and hopefully make the right choices for all of us.