I have always been curious about this. Did you get them to use other services or did they stubbornly refuse and you just accepted it? I am talking using Chrome, using Windows, using social media like Tiktok or Facebook or Instagram, etc. Bonus points if you have kids because that is even more work in the privacy realm
I mostly agree with you and frankly it is enough to have one friend who uploads their contacts to big tech firms with yours included and maybe tags you here and there and you are already uploading data without your consent.
Although what I see recently is that facebook fails to recommend anything interesting to me. I had to keep my account, but deleted everything from the day of my registration and haven’t uploaded a single thing for years.