My $.02: I grew up very interested in airplanes and all other things mechanical. I frequented airshows and airplane museums, but didn't have parents or family who were in aviation or had an airplane or flew. Wanted to be a pilot for as far back as I can remember. Took some lessons between high school and college, which prompted me to want to be a pilot even more, then went to college, majoring in flight and airplane mechanics. Would have come out with commercial, CFI, CFII, multi, etc, and A&P. After about 1.5 years of that I realized I didn't want to fly for a living. This was mostly due to my realization that most all the "cool" aviation jobs only come after tens of thousands of hours and years in the field or military, neither of which I wanted to do. Call me ill-informed and/or impatient. So I switched to mechanical engineering. Spent my last four years at Mooney in Kerrville, and recently moved to Stratos Aircraft in Oregon. I get to merge my interest in mechanical engineering with airplanes. It's the ideal combination for me. I am financially comfortable enough to fly as a hobby now, and even own a Luscombe, Taylorcraft, etc.
All that to say, it may be something he wants to do for a career, but do not rule out keeping it in the back pocket as a future hobby in case he decides it is not actually want he wants to do for a living.