Don't approach privacy from this angle. Tools are tools and they can be used for good and evil.
Trucks can transport goods to remote regions, improving the quality of life. They can also be used to run over innocent people.
Explosives can be used to mine ore effectively, allowing for industrialization. They can also be used to blow people up.
Encryption can be used to protect your data from bad actors. It can also be used by bad actors to avoid detection.