That report was published by trend micros zeroday team, not Google's. Also, bear in mind that project zero and android arent the same team. And pz does sometime

That report was published by trend micros zeroday team, not Google's. Also, bear in mind that project zero and android arent the same team. And pz does sometimes get the same response from Android as trend micro did. And it results in public disclosures just like this one.