I'm new to Happy Meeple and loving it! I do have to agree about the gender-specific pronoun. Often board gaming can feel unwelcoming to women and something as simple as using gender-neutral "they/their" would go a long way in showing inclusivity, especially when it comes up regularly in the tutorials. I see more and more instruction books that come with board games using non gender-specific pronouns, even in complicated games.
Worth looking into, if you're not able to change existing tutorials, you might consider it for future games.