I noticed the same with most the teams. Oregon State's star running back was continualy losing his helmet. I also noticed that he put it back on w/o needing to unsnap/snap the strap. Looked like a pair of slip on shoes the way it operated.
Must be the new cool look. Agree that it's not a good deal.
Guess the good thing is that they won't use it as a weapon if it's not on.