For about ten years, I’ve been hearing about this dispute between pansexuality vs bisexuality. In its most basic form, the contention is that the “bi” in “bisexuality” refers to two genders, which seems to entirely forget about nonbinary people. Some people propose using “pansexual” instead. Other people defend “bisexual”, or admit that it has problems but still prefer it as the more recognizable term.
I am neither bisexual nor pansexual nor nonbinary, so I’m just weighing in from the perspective of someone who has been hearing about it for a long time.