Lynn,
I have been told much the same thing about some of the modern batteries. It's not dire though because a range of options are still available.
I have seen the original style hold down frame in photos, but decided to make my own somewhat different style. That will do me well enough for now. If I happen to fall head first into a box full of NOS battery top frames, I will certainly shove one under my shirt & walk out whistling, but I don't fancy the odds of that happening.
