I am withholding judgement about Boling's coaches and training until I see how he does in the 400m tomorrow.
Let's remember that his entire high school career he trained for the 400m and LJ, not the 100m and 200m; and yet he still was the fastest short sprinter in the country.
I've become a believer that the strength gained from training for the 400m, actually helped him in the short sprints. If you recall, he was always pulling away at the end of his 100m and 200m races, while the other kids were slowing down. Similarly, I believe it is the 'strength' that Dafne Schippers and Karsten Warholm developed while training for the heptathlon and decathlon, that helped propel them to the top of their sprint events. So maybe the 400m training is good for Boling.
Another thing to remember.... six 400m runners will probably go to the Olympics (due to the relay). Maybe four 100m runners will go. And probably three 200m runners.
As of today, I don't think Boling can make the Olympic team in the 100m. Right now the 200m and possibly the 400m, are his best chances.
But also remember, the Georgia coaches are probably more concerned about him scoring points for the team, than about training him for the Olympics.