You left off the last part of his comment "It can make the track so much more fun." I don't think he was having fun out there...
If you look at his HR data, you can see he paused his watch after the 4th rep, the 8th rep, and the 12th rep. It's a vertical line down. Drops 30bpm in 5 seconds, then 37bpm, then 39bpm, despite apparently doing a jog recovery. The other reps show what it's supposed to look like.
Love how it's a windy day so he does 600's and 200's, which enable him to disproportionately run with the wind.
And maybe I'm giving the GPS data too much credit, but the start of each rep is consistently where you'd expect it to be on the track, so it seems reliable. But his pace drops off at 550m for the 600m reps and at 150m for the 200m reps (halfway through the curve of the track). HR data supports this -- it either starts to drop a little in the last 50m or flattens out when it should still be going up. So I'm pretty sure he wasn't even running 600's and 200's.
Dude totally botched this workout. Tapped out of every rep when the headwind hit on the final curve. Took extra rests. Last rep was the slowest. Great top speeds when running with the wind for the first 100m of the 150's though! He might be able to go sub 2:00 in the 800m and score some points for his high school team.