I suspect many emotivists aren't even aware of the concept's existence. So, as a practical matter, I suppose the onus is on those who are aware of it to modify

I suspect many emotivists aren't even aware of the concept's existence. So, as a practical matter, I suppose the onus is on those who are aware of it to modify their approach if they wish to persuade such people. I've noticed a few older, more experienced 'intelligent-rational' types who have developed techniques to deal with emotivists. For instance, they tend to couch criticism or disagreement in words like "Now it's probably just because I'm not as well acquainted with this issue as you are, but..." To my ears, this sort of language sounds disingenuous and insincere (and talking this way doesn't come naturally to me). But it's hard to dispute the results. I'm constantly amazed at how effective this approach can be. I suspect this approach is effective, even though it feels like it shouldn't be, because people who are tied up in their own emotions don't pay close attention to what others are saying, and how they're saying it. The way the language 'feels' doesn't activate their heuristic-defensiveness and usually manages to slip past.