I do not think that Animal Crossing is boring or only for girls.
In my opinion, gender roles are social constructs used to shove people into boxes or to restrict people from truly doing what they want.
Sure, there are physical differences between people who are male and female, but mentally? Heck no!
This is a basic concept of sociology. People grow up in certain ways because of their surroundings. (Excluding disabilities/mental illnesses)
When I asked my ex to play Animal Crossing with me and offered to buy the game for him, he said, "What? Uhh no thank you. That game is too girly for me." and I replied with, "Excuse me? You haven't even played it before."
Him: I've seen the trailers for it. Everything has flowers and hearts in it.
Me: Hold on... what makes flowers and hearts girly?
Him: They just are.
Me: Really... why should hearts and flowers only be reserved for girls? And even then, why would you refrain from something that is 'girly'? Are you embarrassed of doing girly things?
Him: They just are, Jessye. It's just the way it is. I refrain from it because I'm not feminine. If you're a feminine dude, you're most likely gay.
Me: Wow! Okay, so is it the same the other way around? You know that I love my fair share of gore, guns, and violence. Are you going to call me a lesbian? BY THE WAY, WHAT'S WRONG WITH BEING GAY ANYWAYS?
Him: You're not a lesbian though. You're dating me.
Me: What if I wasn't dating you? Would you call me a lesbian then?
Him: No. I'd only know if you told me you were or if I saw you only dating girls.
Me: Then why the **** don't you feel the same way about other dudes liking things that don't involve senseless violence, sex, gore, or mature themes?
Him: .... I don't know.
Me: By the way, there is nothing wrong with liking traditionally 'feminine' things. There's nothing wrong with being a woman. There is nothing wrong with being gay. Masculine traditions are not cooler than feminine traditions.
Yeah... so that's probably why the guy is my ex. As a reminder to every person who thinks Animal Crossing is too 'girly', ask yourself why gender norms are a part of your culture in the first place.