There are various concepts how aikido practice should be done. One of them is proposing an approach where attacker is supposed to harmonize with technique of nage, and it is uke responsibility to make sure the technique looks beautiful.
I believe it is a case in this video. So yes, empty hands techniques look nice, but they don't have any value from martial point of view. The same can be said about weapons practice.
I'd call this practice healthy gymnastic.
This is clearly a demonstration, not practice.