First off...those aren't d1 times. He should look high end D3 and have a better experience.
How do you know the student-athlete is able to get into most D3 schools? How is 4:17 as a junior in HS, not potentially D1? Can the athlete not walk-on at a D1? The answer is, yes, they can.
D3 = no scholly's ever
Walk-on = potential scholly in the future
There are so many questions that have not been asked, and to simply say "hey, go to D3 and have a better experience", is simply bad advice.
Here's another scenario... continue to get better, walk-on at a super high-end program, continue to get better, perhaps even contribute with a point in a championship meet at some point, be content, and walk away having had a great "experience" with great friends and stories that will last a lifetime. Some of those friends might even be Oly gold medalists, etc.