Protecting your anonymity isn't a sign that you're hiding something because you have done something wrong. It is because you're cautious. Benign information can be used against you. European Jews in the early 1900s gave census takers the info they were Jews. Decades later that info was collated with punch card machines by the Nazis to build family trees to hunt them down. This is an example of how "innocent" info can be weaponized in ways you would never dream of.