Mutt
IMHO yes, if taking a narrow perspective.
The effect of the interview is to turn a mild inconvenience into a major inconvenience.
Reciprocity is a reasonable viewpoint and the present arrrangements are asymmetric, favouring the US.
I see no valid argument why US air crew should not be required to attend and interview and hold a visa to visit the UK (as part of a general visa programme.)
However, taking a broader view, it may be that the UK Government are weighing up the value of tourist dollars (bearing in mind that the dollar is weak due to GWB policies) and deciding that no action is the best action, even though aircrew are inconvencienced.
If I were being very devious, I might instigate a new policy where US aircrew where required to submit to Scottish Disclosure and gain an airside pass for UK airports, of course visitng a British Embassy for a suitable interview
, but maybe I have spent too much time in France recently.