Yes, chopsticks do create a big mess and there is some risk that he'll stick it in his eye or nose or ear. But, they also keep an antsy little boy entertained for long enough for me to finish my own breakfast. He has to learn how to use chopsticks sooner or later anyway.
I wonder how ancient Chinese children learned to feed themselves if the only eating utensil used back then was a pair of chopsticks. Maybe it wasn't the only thing they used. Or maybe they did what I did as a child. Just poke the stick into whatever will hold it. When I stopped the poking, I remember gripping the two sticks so hard that by the end of my meals with chopsticks, I had near-cramps in my hands. I was usually very proud that I managed to eat with them though.