I voted for No in the poll. And I am surprised at the number of people that voted for Yes. I think if you ask every Shihan or direct students of O Sensei about that (except Tohei), they would answer No.
And, also, you have to count that when someone has an idea, invents, finds or designs something, It's much harder for him than to the rest who only have to understand it. And do you think Aikido is an easy thing to undertand?