I'm fascinated by this thread. Firstly because it's a beta and nothing is "fixed" tho I agree with the OP in as much as there should be an option for both, it really wouldn't bother me if the voice was male female or neutral.
For me the question of "pandering" for the wrong reasons is more about individual perceptions than actual reality. If you are irritated by female voices you will notice them more.
While there are a lot of female voiced computers across ALL media, there are also many many male voices for computers too. With regards to it being inappropriate, I guess that comes down to intent. In movies certainly, the female computer voice tends to be in there to "balance" against the mainly male bias of the characters i.e Star Trek. I grant you that hasn't always been the case, but tends be getting better. Certainly in the original Star Trek series "where no MAN had gone before" the computer had a male voice.
Has the computer been feminised? Or does it simply have a female sounding voice? I know men who on the phone have a soft voice that could be called female and equally a few women with quite a deep tone to their voice. So I'm not sure judging anything or indeed anyone by their voice would, in my opinion, be sensible.
It is an interesting subject and certainly worth debate and I completely support the OP in hoping Frontier have an option for male, female and NO vocal response.