Considering this game does occasionally rely on certain aspects of the novel canon and comic canon (Countdown, in particular, establishing Data as captain of the Enterprise, the supernova that destroyed Romulus originating from the Hobus system, and bits from the novels, like establishing Donatra as the Empress of the Imperial Romulan State, etc.), that argument's not exactly as binding as you'd think, given that - other than the destruction of Romulus - everything after Nemesis is subject to interpretation.
"In non-canonical novels by Pocket Books, Andorians have four sexes: zhen, shen, chan, and thaan. In function and appearance, zhens and shens are largely female, and chans and thaans approximate males, with shens and chans the more androgynous of the pairings."
It doesn't have to be canon though. The Luna-class starships are taken from the non-canonical novels; the Spiral-wave disruptors we now have on Cardassian ships were solely taken from the DS9 tech manual. So what was the issue with using this Andorian reference to four sexes from the books?