Except Jobs approved the design of that screen, which hasn't fundamentally changed since early versions of iOS (iPhoneOS). And it's that way because quitting apps isn't supposed to be something you do very often, if at all. Nowadays people clear the app history by habit, but it was really only supposed to be for misbehaving apps that were burning your battery, so having an affordance to make it easy was never the point, despite how people use it today.

Also, please stop doing this, it breaks apps. It's unnecessary and just forces your apps to cold launch every time you use them.