This discussion thread has grown to be about how to avoid insulting others. I think Graham would argue just don't feel insulted. We can't all be Graham. And I don't believe that deciding not to recognize disagreement makes the disagreement go away. A lasting resolution that prevents future insult, intentional or implied is possible. But when the claims that are made themselves lead to insult then the underlying issue has not been resolved. It will come back as it has for years in new manifestations. Give it a week. Again I say, it would be better to avoid implied or stated insults in the future all together.
Now if the etiquette that Graham describes were followed, then people could do their own thing and it wouldn't matter in a given dojo. Problem is that people sometimes want to bring their new approach into a dojo were it is not wanted by all, as discussed in this thread:
The etiquette is not followed for the same reasons that the insults are implied or stated.
The idea that Aikido can be anything anyone wants it to be is a very generous idea. It is an extreme example of refusing to fight. I don't think that Gary, Katherine, or most Aikido artists would agree with that idea. Moreover, we are not talking about whether people differ over how to approach Aikido on a continuum, some stronger than others, some more spiritual than others. We are at the basic level of whether O Sensei taught Doshu and other students of that Aikido as an art of non-resistance and harmony. An art without some basic agreed upon definition of what it is cannot survive.
But this is all for another discussion unless related to how to avoid causing insult.