I should also have said reader mode only shows up when you go to a page where reader mode is available. For example go to
$1 and click on any article and reader mode button will appear beside the address bar.
For an easier news experience try the CNN lite website
$1Run your finger over the screen and find an article you would like to read. Without removing that finger touch the screen with another finger. This will do the same as a double tap. I sometimes find this easier than double tapping on the screen. You may already know that gesture but I figured I would mention it.