I make a distinction between disappointment, per se, which is what anybody who doesn't like this pick has; and disappointment that aims to justify itself "just because one of my favorites" wasn't picked.
From your examples ...
I am really, really disappointed in the president ... I figured this second pick would be someone who was not a stealth candidate ... you really have to wonder why the president passed over Judge Luttig, Judge Owen and so many others who have clear records.The rebuttal, "You're just angry because you didn't get your pick," is a cop out, because it doesn't admit to exploration of the substantive differences between the Miers pick, and a host of other picks that weren't. It's an insult to the person who is disappointed, because it paints the dissapointment as deriving merely from the childish pique that comes from not getting one's way.
The "you're just angry because you didn't get your way" rebuttal is as hollow and false as the "sexist" and "elitist" retorts.
Since I view "I'm angry because I didn't get my pick" as a fair interpretation of what Dreher was saying, we can agree to disagree on this.