Earlier quoted context omitted.
Given that the government already knows, and either your employer or your accountant knows, and your bank has a pretty good idea, why do you think your income is to any meaningful extent still private?
You ever listen to a friend, who has recently hit a rough patch, talking about their difficulty paying their bills and think "gee, this would be a rather inappropriate time to mention how much money I make." ? That is where the desire for wage privacy comes from for me. Talking about how much you make, outside the workplace , has no benefits. It is just going to make the conversation awkward, or somebody is going to…
And non secret isy different from rubbing in someone's face