Done. I'm looking forward to either Nancy's substantive reply and apology, or your concession that the issue might be a bit more complicated.

It seems to me that the issue's already been complicated because you've already replied to Nancy impolitely. Now that's happened, it is not really realistic to expect a substantive reply and apology from her simply because you (I, if we're being pedantic) rephrased some of your original remarks more tactfully.

Okay, but the part Nancy ignored when she replied bore directly on (and obviated!) her comment, so she shouldn't have replied to begin with if that was all she had to say. The general point of yours (which I agree with) about the impossibility of replying to everything, doesn't apply.

OK; it sounds like I misinterpreted your earlier comment about 'people complain that ...' as being directed at me, but based on your reply it sounds like it isn't. In which case feel free to disregard the last paragraph of my grandparent comment.