If you don't mind me asking what is so important about privacy?
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?
With the data they could literally impersonate you, this data gets sold to shady assholes, the data is regularly leaked, most isn't public data but shit like your location, phone number or sometimes even credit card info.
Also, why should i allow anyone to know about me, im a literal ghost online, you can't find me, and thats good.