Am I the only one who doesn't take this statement literally and immediately extrapolate it to all aspects of an individual's existence? "I have nothing to hide" is a broad statement that clearly encompasses "everything", but it's often said in the context of a specific thing that a person doesn't care about.
Those of you who would ask someone for financial information after they say this, would you also say "it's hot out side" if they described something as cool during the summer?
Ultimately, given the complexity of security, expecting there to be some cultural shift on privacy is silly unless it's made trivially easy. We can't get people to eat right, exercise, or control their screen time and social media use and all of those have more immediate and tangible consequences.
I appreciate the message, but I don't think the call to action is practical.