Why is there nothing wrong with it? It shows a lack of maturity in an age when he should know better. Take a nude pic and send it and you will be lucky if it does not get posted. I expect our starting PG to be smarter than a Kardashian.
I assume that he sent the picture to someone he knew, right? Was he harassing anyone? Was he seeking publicity? No. He did a mundane thing that most people do at some point in their lives. How is sending a private picture to someone you're courting a sign of immaturity (for a 22 year old nonetheless)? Because there is a chance it will leak and then the civilization will collapse at the sight of a guy's penis? Your opinion of how he should handle his romantic affairs is irrelevant. He's done nothing immoral. It is his penis, and he'll show it to whoever the **** he wants.