I think there is a reason it's there, i saw it, and there have been a few others that have said they removed it, but i'd much rather like it harder to slide out, i don't want it sliding out without me wanting it to.
No, its there like the one on the screen and the back to keep it shiny and probably so they don't scratch it in production. I took mine off and its SO much better! It is NOT "easy" in the way you guys might be thinking. There is no way this thing is going to accidentally slide out. It's much more enjoyable IMO
I thought mine opened/closed fine but then I removed the film. It's a bit tougher than the film on the screen that it comes with but once you peel up a corner it comes right off and the back of the screen looks nicer and it slides smoother. My old Chocolate 2 had the same film. I think the Choco 1 did too. I've always taken it off and never had issues.
But if you don't mind how it feels I guess its up to you