ZD- generally speaking when Gedolim disagree with each other, you still are not supposed to say that you disagree with one of them. You are not great enough to disagree with a Gadol. Since there is a machlokes and you can’t follow both, you follow one or the other, but not because you are great enough to say that one is wrong.
However, the above issue might be a different type of issue, and I’m not sure if this applies. But I certainly can disagree with Rav Miller on this issue. (although I would prefer to be dan l’kaf zchus and assume that he might be being taken out of context, and there might not be a real disagreement here.)