Legitimate, care to comment on the rest?
I thought I did.
Even during the period when the WRAF was a separate service and had separate officer ranks - Section Officer etc - the names of the other ranks were the same as in the RAF and non-gender specific.
If the need is just to assuage perceived rather than actual slights or injustices to aid recruitment, then where does one draw the line? There will always be those who wish to feel offended.