Apple iOS 9 Content blockers leaves iPhone 5 and 5 C out in the cold

The ability to add content blockers to your browser in iOS 9 was one of my most looked forward to features, but though Apple doesn’t mention it, all the apps for content blocking leave out the iPhone 5C as well as the iPad 3 which can both take iOS 9. It makes me wonder what else is left off of the earlier devices. I am betting that the ability to keep playing a video on the iPad doesn’t work on the iPad 3, but will have to test and 3 as soon as I can get my wife to upgrade my old iPad 3.