I understand what you are saying, but it is really hard to single out WME in this regard.
Lets face it, almost all ski movies included footage of people skiing lines that fracture and slide. In my eyes, that footage should be left on the cutting room floor, with the only exception possibly being if it is being used for education, ie. "The crew screwed up, our athlete should not have been out there, we made this mistake in judgment and people could have died because of it. We wait all year for a slim window where this line is not instant murder, and yet we got it wrong."
In my eyes, every time a movie includes footage of a slab breaking loose, even if the skier escaped off the side, even if the skier hucked something huge to get clear, even if the footage is the best that has ever been captured, presenting it sends the message that avalanches are part of the experience and your chance to prove yourself.
So basically, I agree "No Turning Back" is not a good title, but "Like There's No Tomorrow" was a worse choice. I remember thinking WTF somebody was thinking with that one for the same reasons you mentioned. Of course, Miller's classic phrase "If you don't do it this year, you'll be one year older when you do" has questionable implications if that attitude is applied towards BC skiing...
In films actually made by Miller, "No Boundaries" and "Beyond the Edge" could be considered not great messages too.