Yeah, I'm not brave enough to bend my main stem until it "snaps". I personally haven't read anything about that particular technique. At first glance, I would assume the branch would die if I were to snap it, but maybe there's more too it than that. All I'm doing is gently tilting the top of the branch a few degrees to the left or right so they don't hit the light. It also exposes the flowers lower on the branch to more light which is an added bonus.