Your ticket comes across as very confrontational. This puts the developer(s) into a position where they feel the need to defend themselves instead of acting collaboratively with the user to solve their problem.
We can assume that they made these changes deliberately. Therefore it's going to take a lot of conviincing to get them to undo the changes.
For what it's worth, too, I disagree with you: I'm quite happy with the asethetic they've built. Although, in case it's not clear to you, no-one outside of Google can see the screenshots you supplied. So I've not seen the specific notifications you're complaining about.