so fun fact: the origin of the word "bi" was, unequivocally, "attracted to two genders." and the origin of the word "pan" was, unequivocally "attracted to all genders or regardless of gender"
mentioning that pan is, has been, and will be more inclusive than pan is not biphobic. it's just the history of the terms
while I *do* support changing the term to be more inclusive, which ultimately reduces its use as an exclusive term, don't forget its history