Caesar leaving was interesting for sure, and he just announced a new fintech startup yesterday. https://www.arbo.works/ I can't speak to why he left or what he's doing now, but I wish I did know. :)
Also, it's important to remember how big Google payments is. As the article says, Bill Ready has 3700 people reporting to him that do a lot more than the Google Pay app (which lots of people are talking about here). We do a lot of things.