This kind of falls is completely useless in aikido. The ukes of Ch.Tissier were doing it already 30 years ago.
Even if nage has a real control on uke(which is not a case on this video), he will never be able to throw uke like that. In reality it is uke who is throwing himself, which means that the technique is a fake.
It is some kind of gymnastic not connected to aikido practice.
Same coin - flip side: this kind of ukemi will lead to injuries when training with someone executing a tight technique.