This is why my skis don’t release.
There are some things you must do differently in powder, ie, lean backwards to keep your tips from diving, and keep your weight moving up and down.
Out west you’ll see people with powder straps, which are 5’ strings attached to the skis and tucked under your pant leg with an orange ball at the end. These are not attached to the skier, but allow you to spot the orange ball floating atop the snow and reel in your missing ski. Once, when skiing in the Sierra I saw a guy lose his ski on the first run in 4’+ of fresh snow (yes, 4 feet). He was still there searching at the end of the day. Some resorts have guys with metal detectors who will find your skis for a price.
It is possible to get powder in the east. I’ve skied in 20"+ several times in VT and ME, not quite like Utah but definately powdery. No face shots (show blowing up from your skis to your face) but snow up to your waist on occasion.
There’s even snorkel skiing in places, where you wear a skin diving snorkel when skiing some chutes that fill up with LOTS of snow. I’ve heard of it done mainly in MT, but I think it’s probably for show, not really needed.