People are looking at this years WA state fatalities. 3 snowshoers, 1 hiker, 2 snowmobilers, 3 BC Snowboarders. Based on preliminary reports I wouldn't consider any of them "highly experienced at avalanche terrain travel"
This particular distribution may be an anomaly, but looking at the user groups with increasing fatalities (snowmobilers, snowboarders) the base question of "how to reach the people who aren't BC skiers and climbers" is still valid - if your goal is to reduce avalanche deaths.