Ahhh...no one is wrong, it's just a matter of differing opinions, and perspective.
You say Aikido fails and I say, no, the person does. I feel there where deshi of O'Sensei who had great skill, and your criticisms of Aikido don't apply. I say the skill sets are there, the principles are there, the internal power (to borrow a term you use) is there all with in Aikido.
And it isn't up to me to judge whether a Shihan (now or later in their lives) measures up to your criticism or not. It's not my thing to do that.
It is a matter of what we want and where we want to go, and who we want to follow, and who we want to follow us.
So what exactly do you want, where exactly do you want to go,and who do you want to follow and why on earth would anyone want to follow you?