So now the goal has moved from proving Google is spying, to showing how that spying is harmful? But okay, lets go with it.
First of all, the information is disclosed immediately - to Google. Then it's just a matter of how much more disclosed is gets.
Surveillance has been shown to chill expression (https://www.cjfe.org/how_mass_surveillance_harms_societies_a..., https://www.eff.org/deeplinks/2016/05/when-surveillance-chil...), and even just metadata can be used to easily find whistleblowers (https://www.abc.net.au/triplej/programs/hack/how-team-of-pre...).
Will Google now or in the future offer services to help "secure corporate IP" by finding whistleblowers? Is it wise to assume they won't? Keep in mind all the information they gather now will be kept for when they want to misuse it later. What if they get served with a warrant for that information? Such as by a government agency that's helping to quash unions (https://www.bbc.com/news/uk-43507728)? How certain are you that there's no company that, now or in the future, will offer services to employers to help identify employees with corporate-unfriendly political beliefs?
Then there is the simple fact that information is power, and used to amass even more power, such as when Facebook used data gathered by Onavo to decide which apps to acquire (https://www.fool.com/investing/2018/12/05/facebooks-onavo-sp...). So spying directly helps corporate giants maintain their monopolies.
And all of that harm is without an authoritarian government in place. What about countries that aren't so lucky as to have a mostly freedom-respecting government? How sure are you your own country won't join them in the next ~50 years?
Surveillance is a leash and collar around your neck - just because it's long enough now, doesn't mean you should wait to get it off.