There was never any expectation of privacy if you knew Zuck's history. Facemash almost got him expelled for violating individual privacy.
It's not a coincidence that federally backdoored spyware like Windows is the most popular operating system in the world. I too remember the shocked headlines of the Snowden revelations, and ten-plus years later I work shoulder to shoulder with people that couldn't possibly care less. There is no expectation of privacy, HN too quickly extrapolates it's own virtue signalling to normal people that enjoy using spyware like TikTok, Facebook and Windows.
The overwhelming majority of users do not pay and use the free service.
Recalling the now-old adage: Facebook is only free if your time and privacy are worthless.