I don't think anyone is arguing that "guys" would be accepted usage to refer to a group that's entirely female gendered, only that it's acceptable for addressing mixed company. A bisexual person may well think that way about their sexual history in toto -- or they may find distinguishing genders is useful in this context.
I don't think anyone is arguing that "guys" would be accepted usage to refer to a group that's entirely female gendered, only that it's acceptable for addressing mixed company. A bisexual person may well think that way about their sexual history in toto -- or they may find distinguishing genders is useful in this context.