You don't have to go fast.

I rather enjoy going slow through deep powder off-piste, especially on a day with good views.

It's like driving cars. You can race cars through suburban roads, or take a scenic drive and have a picnic.

A skiing instructor once said to me: "Anyone can go fast, that's easy. Being in control with good technique is hard."

I've bruised my rib 2nd time this season. All my injuries happen in the snowpark though and I suspect it's the same for the people you mentioned.