Earlier quoted context omitted.
They did request for it to be removed. They sent Google the request, which is what I would do, because dealing with some spammy app developer isn't worth my time. And frankly, given how this guy doesn't admit to wrongdoing or even breaking the rules, I don't buy that he'd be particularly responsive. I expect I'd get a defensive and argumentative email in response.
This is why we can't have nice things you just assume he's not going to comply but you don't even make an attempt to resolve the issue in a gentlemanly fashion. Why? Because you can't be bothered to. You would rather give him a black mark on his account with the knowledge that only 3 in his life time would get him permanently banned.
Why? Because you can't be bothered to
Yes, because it's a waste of time and resources.
One developer, one email conversation, fine, not the largest time investment.
What about all of the other developers in the world?
Especially if this became a recognised method of gaining work?
Suddenly you need full-time staff dedicated to the non-core-business activity of writing "gentlemanly" emails.
It's unworkable.