It is my observation that for many people; the first time they land with a different sight picture makes it difficult to judge the height above the ground to flair.
His airspeed was a little low so I suspect the ground was coming up pretty fast and it is easy to overreact.
I am glad he wasn’t hurt.
I thought he picked a good place to make an emergency landing.
I'm very low time, but here's what I observed from the video.
Looks like he didn't hold the stick back until he stopped. As soon as he touches down, the stick jolted forward and right allowing the rotors to start pulling him over. Then starts the duck walk.
Best you can say is "He walked away". As Bob Hoover said, "Fly it as far into the crash as possible". Hard to tell, but may have had to land downwind, as groundspeed seems fast.
That was his first solo (and first pattern), guys, made before he got any viable training ( It was downwind indeed, though there was enough altitude for a 180 turn - lack of experience didn't let him to decide to do it 180. Lesson learned, gyro restored, ADM fixed.