So Carrefour got a fine that was only 2% of Google's fine.

Carrefour has revenue of 80bn/year (Google has 68bn/year in Europe).

Very spicy indeed.

"The complainants argued that Carrefour (1) did not comply with their data access or erasure requests; (2) sent them direct marketing communications despite the fact that the complainants had objected to receiving those communications; or (3) in one case, did not allow the complainant to unsubscribe to marketing emails."

This all seems a lot worse to me than making one button harder to press than the other.