Yep! You are right because no one wants to get along with a Debby Downer as they say if a stutterer only focuses on the negative things of stuttering. Positive evaluation is better, certainly, because then we are not embarressed about stuttering! Also, if we focus on the positive evaluations as better, it will also be that much harder to treat the positive evaluation of a stutter because we are in a battle. What you said to observe and let them pass to stop the battle is seemingly the better way of treating the evaluation