I think others have already pointed it out. People who say the aikido is ineffective are those who have little or no experience in aikido training.
They may have gone to a dojo and observed a class and mistook the grace for ineffectiveness. These are people who watch movies and think martial arts should be done with lots of punching, kicking and lots of noise.
They miss the subtleties from mere viewing. They mistake the gentleness of aikido for ineffectiveness. And they don't understand ukemi and think we are just throwing ourselves and just making it easier to perform the techniques.
Anne Marie Giri