The primary point being that the inviters were not looking for "a female perspective" but "a perspective from a female---who may in all expectation see things differently than we do".

Clearly it depends on the context, and how the questions get asked. Too often I see this kind of thing play out as "Oh let's find a chick to give us the woman's seal of approval". I was trying to be clear about when such a request would and would not play that way. The equivalent to what was discussed in the OP (a call for the participation of artists) would be sending out a general office email asking for (random) women to comment on the ad campaign. That's condescending and classic privileged behavior. Just asking some particular women they respect the very same kind of questions that they might put to a male colleague, isn't.