I totally agree. He should continue swimming because of the value it has for him now, not because he or the parents think it will get him admitted to college…because at his level, it won’t matter for college admissions.
What else does he do that shows a commitment to the activity.
My DD swam for four years in HS…in college, she was a lifeguard, but never swam competitively. She honestly stayed on the swim team in HS for the fun, and exercise. Not because she thought it (and playing the oboe) would get her admitted to college.