The Utah Avalanche Center's preliminary report on the slide that killed Jamie Pierre states that there were at least 12 skier-triggered avalanches today. Another skier was injured in a slide in Gunsight at Alta. I don't know how many folks were at Snowbird (besides J.P. and his buddy), but from the discussion on TGR it seems like quite a few were at Alta. Neither area is open for the season yet, so there's been no avalanche control -- it's backcountry conditions.
I've no doubt that some of these folks were being prudent, had sufficient training and proper gear, but I suspect that many were in over their heads (definitely no pun intended). Each year, more people are getting into skinning or hiking for their turns. It makes me wonder if there will be long-term consequences to today's events.