i was kinda hoping for the same tbh, since i use they/them pronouns as well, but on the other hand (paw?) its interesting to see who the character we play as is :D
Being a nonbinary person myself, I absolutely get that! In this case I decided against it, because Arvo is more of a fully fledged character than a self-insert avatar for the player, but that might not be apparent at first when starting the game.