Then that could apply to every single Patreon Poll option. (including encounters and all other features)
Story Mode Hiro IS a boy. That's a fact.
Adventure Mode Hiro is an Orc/Mountainman/Elvish Boy/Futa(breasts)/Roaming Prostitute that regularly has sex, gets fucked and enjoys swallowing large amounts of cum often. That being someone that uses Male or Female pronouns isn't a giant leap, but it would be for those that want that to be the case when playing. It massively improves their playing perspective, while not impacting that of those who'd play MaleHiro. (To attribute the issue to Writing Changes taking a long time, while indeed a consideration, is the only acknowledgeable issue at this point I feel.)
It will not change the existing scenes, altering nothing of the game for those that play it as MaleHiro, it will add scenes to the encounters for FemHiro. These scenes would be written alongside the MaleHiro scenes, or would be editied versions of them and simply be used as checks in a similar way to other scenes (Which has been shown to be the case for several expanded encounters, where variants are added on for Flaccid, Chastity, Cage, Buttplug, Mascu, Impure and so on.)
I trust the Majalis Duo to handle it well, if it passes polls, but I also have to wonder how long it has been a poll option. It could entirely be something they planned on their docket, using the polls to gauge priority for certain features over others (intending for it to allow fans to get specific features implemented first before others.)
And, just to be clear, I would love for a pronoun option BECAUSE it widens the playerbase even further.