I see these tricks like they have nothing to do with aikido.
Aikido is a dynamic interaction between nage and uke, where they roles interchange constantly. Such static attacks like on the video are done in aikido ONLY where you are teaching complete beginners a new technique. The main point is, when an attack is about to touch your body, the technique is already finished. That is possible because you are controlling an attacker from the moment the attack starts in his mind. If you don't do that, you are doing a merely some kind of jujutsu.
Aikido is happening BEFORE contact.
I less see them as tricks than as exercises and why confine anything to beginners, even the most basic exercises can be practiced at the highest levels?
I agree with the main body of your post though, aikido does happen before contact,