Honestly, I think that's the root of a lot of problems in Aikido and I'm done with that - if I think someone's wrong I tell them. If they're actually right they should be able to explain why in a reasonable manner. If they can't then...something wrong.
Can someone explain differential equations to you if you haven't yet mastered basic algebra? And yet, from the depths of your "knowledge", he/she appears to be spouting gibberish...