Reminds me of the time when Signal(the private messaging app) once tried to get ad data from Facebook and show it to users with a high degree of specificity eg “You got this ad because you’re a middle aged woman who enjoys kpop and loves reading about Christopher Nolan”
Holy shit. I’ve also been similarly creeped out by this behavior as well, and did the same setting changes as the original commenter. This comment made me remember I signed up for a Delta/Lyft promo way back in college. In my case in explicitly signed up to link both accounts, but I wonder if they have other methods
Relevant article: http://archive.today/fzUL4