I can't watch the video. Just can't stand to watch it.
I have been up 800 feet many, many times in my hang glider.
Didn't bother me a bit, wanted to hook a thermal and get up to 1,500 feet where I felt comfortable.

But I couldn't stand to be more than 25 feet high on a structure. Somehow it is different.
That guy has some guts, maybe more balls than brains.