What harm does public data have to you? Couldn’t one just ignore the ads? You can’t see anyone watching you, is public data good for public records? (I’m just curious). I know this sounds weird but is public data good for historical preservation and knowledge increasing the importance of the individual? And does public data lead to better products?
Privacy brings security under totalitarian regimes or in countries that shift in that direction. They might say if you have nothing to hide, you have nothing to fear, but there are unjust conditions under which you have to hide things, like that you belong to minority that is targeted by the authorities. Like the nazis did in the third reich, where privacy was reduced during their takeover. Or that you belong to a party that is suddenly framed as evil and enemies of the nation. Or if you have connections to “traitors” or other “scum”.