LOL
Flight Attendants don't LIFT the curtains...it's a whole weight issue for fuel.
We want the curtains back, at least the mesh curtains to stop people from taking more away from the F-experience. We all know how cheap the experience has gotten.....(which we won't go into)...having people from Y class or any other class run through F takes more of that better experience away.
Yes, the idea is to watch someone come up from the back of the plane, but curtain or no curtain, I bet there will still be a surprised F/A when someone says hi to them while they are in the galley