I disagree. This is a valid way to counter ikkyo, if the technique is done poorly. Okay, it's not really aikido, but it does effectively point out when nage is doing a technique poorly.
Please do not get me wrong here. I am not suggesting that the technique is done poorly, I am assuming that the technique is done correctly. And I think that Katherine also meant to give an example of someone who is doing the technique in itself correct.It is from that starting point that the question on the use of strength comes. Hence my response.