Preferred Pronouns - Can't tell if real or not

I've seen the "intelligence is ableist" thing a lot and it's usually perpetuated in autism/developmental disorder communities on tumblr. Unfortunately, while in some cases it may be satire, there are people who genuinely do believe this.

Wait, how can you be bigendered, and gay? I mean, wouldn't bigender mean you identify as male and female? But if you are gay, but also both male and female, wouldn't that mean you are only attracted to people who are also bigendered? Or maybe it means you are attracted to the opposite gender, which is the same gender…

I am putting to much thought into this.