I'm a little late but lemme do a quick Biphobia 101 lesson to describe it as best as possible for those who don't know. There are many reasons why it exists and why bisexuals are hated, so I'll just organize them into a list by types and categories to avoid a wall of text.
Bear in mind that every "type of biphobia" can overlap and intermingle with other ones.
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CATEGORY A - "It's an act of deception/just pretending":
TYPE A1: This subscribes to the idea that bisexuals are pretending to be...well bisexual, because they want to stick out more. In other words, they want to be a "special snowflake" or want to be treated differently from the rest of the people around them in some way.
TYPE A2: This idea argues that gay people pretend to be bisexual because they are still in the closet. However, once they come to terms with their sexuality, they will "drop their shield" and finally come out. As a result, some people believe that bisexuals are actually just gay and that's it.
TYPE A3: This idea argues that someone pretends to be bisexual in order to trick someone else and get into their pants. And if questioned about it, that person will use "I'm bisexual" as an excuse to avoid stigma. So it's used as an outright act of deception. Bear in mind that A3 often overlaps with A1, except unlike A1, this belief is much more malicious in nature than sympathetic.
CATEGORY B - "Bisexuals are promiscuous":
TYPE B1: This idea believes in that bisexuals like having multiple partners, which is a pretty big stereotype. That by itself pisses off a lot of strict monogamists, which is another reason why bisexuals are actively hated.
TYPE B2: This idea also believes in the aforementioned stereotype. However, the hate is more out of fear that a bisexual will cheat on their loved ones and you wouldn't know who since their sexuality includes more than one gender. Bear in mind that the people who use this argument are usually the kind of people who feel the need to compete for their lover's attention, or feel insecure when a person of an opposite sex comes near their lover (or same sex if we're talking about a same-sex couple).
CATEGORY C - "Bisexuals are confused":
TYPE C1: We all heard the "you are going through a phase" shtick, regardless if you're gay, bi, asexual, trans, pansexual, etc. However, this is kind of harmful because it leads to the belief that a bisexual person is "just confused", and most people don't want to date a person that's unsure of their sexuality because of the high risk of the person not truly loving them back. And of course, that puts a foul taste in some mouths, which is another reason why bisexuals are distrusted and hated.
TYPE C2: Some people genuinely believe that it's impossible to be attracted to more than one gender. They just flat out don't believe it. This is in category C because I have no where else to put it. :V
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Can't think of any other reasons on why bisexuals are hated. In regards to pansexuals, pretty much all of the above also applies. But it's also worthy to note that "pansexual" is a recently new term, so not a lot of people know about it yet, which can also lead to more erasure and a little hate.
bi/pan people dont get more hate from the gay community
i really dont like people pushing this narrative that gay men and lesbians hate bi/pan ppl more than straight people do. its not helping anyone and its certainly not true. there is a lot of intracommunity conflict but in the end its horizontal oppressive struggle. lesbians and gay men dont hate bi/pans more than straights do and vice versa
Yes. Intracommunity conflict is the best way to describe it. There's a lot of it in the LGBT community as a whole, if you want to call it that. It's very heavily fragmented. There's a lot of hate between twinks and bears, butch & femme lesbians, trans men and trans women (heck, there's even conflict amongst their own kind because of gate-keeping), asexuals, non-binaries...pretty much everybody. I wish it wasn't like that though.
EDIT: Added a few things.
