I didn't realize it only applied to 3g users, so thanks for the definitive proof. And I was correct that it only applies on a congested cell site, which hopefully, if they do ever throttle 4g, they keep this policy. It also makes the most sense - why throttle someone if the cell site is not overloaded no matter how much they use? And I would hope that, as the cell sites start getting congested, that that becomes incentive to add resources to that location. So the "optimization" may only last a few months.