As the leader of Facebook's products he essentially was directly responsible for the total neglect of the Facebook Developer program which caused the biggest PR

As the leader of Facebook's products he essentially was directly responsible for the total neglect of the Facebook Developer program which caused the biggest PR disaster in FB's history; not to mention, the misuse of user data collected through the program by Cambridge Analytica. I fail to see how he was a good leader vs riding the wave of Facebook's success. Sounds like Facebook eventually outgrew him anyway so they fired him.