There is another solution. Since the Google page indicates that many of their apps are simply going to re-install update, and since I do want to keep Google Earth, I chose instead to use Little Snitch to block the software updater from phoning home. Why do I care if it phones home? Because if you are trying to maintain some level of privacy, especially using TOR or similar solutions, phoning home to Google spoils all of your hard work at being stealthy. Any firewall capable of blocking applications (anti-spyware) should do the job, but being a mac user I prefer Little Snitch.