No question that he is very strong and explosive; however, the height of that box jump performance is misleading.
When using an approach run you’ll see performances go through the roof. By comparison, when I coached at the high school level I had multiple athletes that were in the mid to upper 50in range when using an approach run.
More than the height of the box, what’s impressive to me is the relative ease at which he makes the jump and how (when you pause the video just right) you can see that his knees are only flexed to just past 90 degrees when his feet land on the box.
I’d be interested to know what he records in the VJ and SLJ.