When I was there, there was no universal process; different teams had different processes based on their focus. There was a launch process for Google products and there was the open source office for approving open source code (which amounted to a rubber stamp in my experience; they mainly checked for boilerplate issues). As I said above, my team and others were allowed to publish at our discretion.
Even if this person violated that process, it is an extreme consequence to fire them for that infraction.
Even if this person violated that process, it is an extreme consequence to fire them for that infraction.