What’s important to hide is always changing. So even if you have nothing to hide now, you may wish you had hidden it in the future.
Here's a software engineer who was incarcerated into the worst jail in the country, yesterday: https://en.wikipedia.org/wiki/Keonne_Rodriguez
He Built a Privacy Tool. Now He’s Going to Prison. https://www.youtube.com/watch?v=Fshsk8MCAf4
Fast forward a few years and the Nazi regime used census results to go after every family that was undesirable for them using the census data they bought from IBM.
Privacy and anonymity are not needed until they are desperately required.
But IBM knew what they were assisting with, and even pre-WW2 was already assisting the Nazi regime of 1933-1939. And they didn't stop come WW2, if anything IBM opened new subsidiaries and continued throughout the second world war.
"(...) IBM leased, rather than sold, its machines. The company retained control of punch-card supply and provided service through subsidiaries. Each set of cards was custom-designed to Nazi requirements. He later wrote that the IBM headquarters in New York oversaw these arrangements through subsidiaries across Europe"
"(...) IBM New York created a subsidiary in Poland, Watson Business Machines, after the 1939 invasion. The firm managed railway traffic in the General Government and ran a punch-card printing shop near the Warsaw Ghetto. He stated that this subsidiary reported through Geneva to IBM New York, and revenues were transferred accordingly."
All I’m trying to say is that the amount of information being collected for each person can be used very nefariously and targeted as individuals we wouldn’t have any chance to resist this dystopian future.