They need to do this, but it needs to be placed in an area off the map. I've been kicked out of the plane a few hundred meters before reaching the houses I was aiming for, I wouldn't want to instant die from it.
I find the 2x scope and everything under it harder to aim with than just using the iron sights. The dots block my view and my shots don't hit where I'm aiming. The 4x scope is only good for it's magnification, but it's crosshair also blocks my view when aiming at further targets. The 8x has the best crosshair by far, I wish I could use it on the other copes.