No idea, Sweary. I saw it first on our local university LGBT site. Curiously, that one doesn’t mention Biphobia either.
So I popped onto Wiki to find out more about it. That doesn’t mention Lesbophobic either. Presumably, they think Homophobic covers it.
Hopefully the usual suspects will be too busy at their own organised events to bother the Women’s Place one.
Unless, of course, they are more interested in rabble-rousing than in celebrating their identity.