When I started my instrument training we used Cessna 140's, the orange screens were cut to fit the windshield and side windows and only took a few seconds to install, putting on the blue goggles was obviously not a problem.
Cost wise, what does it cost to buy orange film / plastic and blue goggles?
So I can't see cost or the time to install the screens being the reason it is not used anymore.
Maybe some flight instructors would know why this method is no longer used?
Maybe it is just to realistic and to simple?