Yes, this is as stupid as it sounds. No, he is not successful. No you should not try this ever. Yes, he should rethink his life choices.
Just because it’s summer doesn’t mean that you have to try and get 100% usage out of your winter equipment. It’s perfectly reasonable to leave them sitting in a closet or a basement for the 6 months of the year that you can’t use them. I’m pretty sure you did way more damage to them by trying to ski down a rocky waterfall then if you had just left them in a bag in your basement. But hey, someone’s gotta win the Darwin Award, unfortunately, he survived.