Tuck and roll clarification:
I had brought up the "tuck" and roll and was specifically referencing a diving forward move for which the tuck and roll has been widely derived. So, perhaps I should have written "dive, tuck and roll". It is also a well known move in football when a runner easily makes it into the end zone absent of defenders. They also use it for any forced falls or dives as is done in other field sports like baseball and soccer. The clip below is a quick baseball example of dive, tuck and roll. You will also see that he intently employs his arms, reaching for the ground with bent elbows, tucking the head then rolling off the shoulders.
Now, if someone wants to either recommend or be recommended to have this move in your snap decision arsenal, good luck to you. I have never seen it done, and frankly, I watch enough video to simply know it is not. I do suppose that a WC skier who finds themselves doing a "superman" diving head first, perhaps from rolling too far forward off a knoll, may benefit from something similar but that is in an entirely different world of physics than 99.9% of all skiers. I would challenge any one to even find a WC youtube video of anything similar to the dive, tuck and roll, as described, as an intentional move to stretch out the impact.
Just as long as someone is not letting learning how to fall get in the way of learning how to ski and no one gets hurt with questionable advice, it"s all good.