Personally, I'd find more beef with Mastercard at this. Sure Google is becoming big brother, but it's Mastercard who sold your data in the first place and they had the responsibility of keeping it. I mean, should you get mad at the tattletale or the one who tried to pry it out of them with sweets?
I already know that Google will try to find a way to get our data and we have to actively select which data we're willing to give up, what I didn't know is that institutions we thought we had agreements with to keep that data private (Mastercard) were going behind our backs.
Plus it feels shady that NEITHER of them announced it.