I agree that what you said may be true for some providers. One reason they may not have used "bisexual" is for a similar reason -- because there are people like me who never hire bisexuals. (I have found they generally are either straights who say that for Rmen marketing purposes, or are much more tentative in their limited passion, or are much more circumscribed in what they will do, or have never done "that" before, or are less spontaneous, or...)