Yeah, I would say something in the neighborhood of 100% of suicides by teenagers are due to either family rejection for sexual or religious identity issues, or parents too stupid/religious to recognize and get treatment for the symptoms of depression. Dungy has no business giving people parenting advice when he was (at best) so uninvolved in his own family that he allowed such a thing to happen, or (as is widely believed) actively involved in pushing his son to kill himself.