It seems common that the arguments for privacy trumping other values depend on bad behavior by state actors. In which case, reforming the state by whatever means necessary would probably do more good than advocating for philosophical concepts.
The situation is very complex because privacy has been implicit in our daily lives for so long, it's really difficult to map out the ways it would reduce our personal freedom. If we want to remove privacy, then we need to make it impossible for anyone to keep anything private from anyone else.
If privacy isn't important; then we should all live in proverbial glass houses where everyone can see everyone else's lives. Why should we trust the government with that power, why not everyone?