I have more scars than most, I was just like your son. When I was 3 yrs old I slipped on a hammer and fell cheek 1st onto a jagged concrete block. 13 stitches. Still have a scar and women ask me about it frequently, they think its sexy.
Chicks dig scar, plain and simple.
You get him plastic surgery now and before you know it he will be wanting a nose job.