Rocket Rings are terrible, I agree. However, I once pretty much bent one in half. I was trying to remove a crank without pullers. The chainring bent almost in half from the blow of a rubber mallet. I was able to smash it almost flat afterwards. This may be a good thing, this may be a bad thing. But hey, you can fold them and use them afterwards, Campy stuff can't do that.
But yeah, they are terrible.