He got the time wrong by 40 seconds, not a few, which indicates how little he was actually paying attention. Hence at least a few of the downvotes.
The irony here is that you claim "no one" is suspecting this guy of doping when in fact you and at least one other person in this thread are doing just that-- probably the same percentage of people calling into question Hull and Hoey's performances.
But here's why this guy's situation is-- for now-- different from either of those two athletes, and certainly from that of someone like Chepngetich: He was not already a pro athlete when he ran his 2:10, and now his 2:07. All of his results apart from the last 3 were from college races-- i.e. from when he was a college student-- and none of them was a marathon.
Few people had heard of this guy before his attempts at the marathon because he was one of literally hundreds of pretty good college distance runners, none of whom had tried a marathon. What makes him unique is that he decided to train for the marathon, instead of something shorter, right out of college. This alone makes is almost impossible to determine how far-- if at all-- ahead of the curve his first two results have been for someone with solid college credentials. That said, and as others have pointed out, there are historical precedents within the US for an athlete specializing in the marathon from an early age and showing world class ability from the get-go (Bill Rodgers is probably the closest comparison, and Bill Rodgers is about the last person to ever have been suspected of doping).
And we have at least two comparable very recent data points, courtesy of Japanese athletes around his age and experience level (and Japan is the one place in the world about which there is a consensus re: the absence of widespread doping): Two college-age athletes just ran right around 2:07 in their first or second attempts at the distance.
Leave this guy alone.