No, that's from an intern that knows nothing and it's been refuted to death. The No.1 reason is Android allows more control for apps and users. e.g. It doesn't limit much on what you can do as a background service, so you can poll and drain the battery if you like. iOS on the other hand, put much restriction there. For a long time no app other than selective few stock apps are allowed running concurrently. The downside is that your state may not be reserved once you switched back to an app. Overall it's freedom vs. control. My Android device would run as fluidly as day 1 after 2 years but an average Joe's may not.