I don’t think that’s entirely true. They won’t sell direct data, but through their ad and search systems your ads can drill down to very specific people and thus you know about them.

Sure you can drill down to specific characteristics of people but as far as I am aware it is Google that actually handles the interactions/delivers the information. So I am not really sure what information a third party could gather about a specific person.

But yeah I totally agree data collection is a huge problem basically every tech company is doing it. One of the reason why I try and self host as much as possible. To truly solve the problem we need better privacy laws in place.