Not sure what the "ha, ha" signifies here, but it's a very good point. The senior instructor at Hombu, the guy who opened up the Americas to Aikido, the guy with major high-level certification from O-Sensei himself walks away from the name and the history and gives his new organization a different formal name.
I think there's a level of humility and, I don't know, recognition of the facts on the ground about this that I find admirable.
The ha, ha, signifies how every person who makes their own way with a new name be it tomiki or whatever is doing so out of respect and humility. To show it is different.
The name tells you it is different in some way. It's for you to ask and find out their particular methods and philosophy and way. They have done their bit.