They didn’t drop the don’t be evil thing. It’s still right there in the code of conduct where it always was, they just moved it to the conclusion of the document so it’s the last thing that remains with you. See for yourself: https://abc.xyz/investor/google-code-of-conduct/
The supposed removal is a perfect example of the outrage-bait headlines I’m discussing in another comment.
Clarifying: are you asking if downloading the Proton Mail app through the Google Play Store gives Google access to your Proton account? If so, the answer is no.