Your argument is invalid. Theres a worldrecord, I m not entirely sure about the height, but I believe its 60 metres and from that height someone is jumping down in a pool filled with 20 cm water. Not hurting him.
And this pool looks a lot like the pool we have

, so its filled up to 1-1,10 metres and I doubt he reached the height of 60 metres.
The fact I m doubting is, that he really reaches his target that exactly. Theres such a high risk missing the pool, I dont know, if someone would really do it.
I m not sure what to think, doesnt look faked, but on the other hand it looks insanely dangerous and

I dont know ...