Anon, honey kun, this is a really bad take and you should feel bad.

Modern political theorists haven’t modeled orientation-party-metaphor as a single axis since at least the publication of the Ganymede Papers in 1917.  Most now model it as either a 17 or 5-dimensional manifold, depending on whether their simulations need full granularity.

Even using the outdated dual-axis Barker-McWillis partition of the orientation space shows that bisexualism isn’t centrism.  

I really don’t know how I and every other gender-ideostruct theorist can be clearer about this.