No point bringing other holidays in to this. Bushtarion is my creation - I'm British, left wing, liberal, atheist, and I love New Years and Christmas holidays (I don't care about any other holidays through the entire year). And like any creative person, you put yourself in to your creations - and so things in Bushtarion are often geared towards my personality (like any artist or creative minded person!).
I don't celebrate "Hanukkah". Or the Chinese New Year. I don't celebrate people's desires for individual holidays. But I do celebrate and enjoy time off on New Years & Christmas, and enjoy having a blast. So that's why certain holidays go in to the game, and certain holidays do not
It's not about pandering to those who choose to go out, it's about me saying "hey everyone, I think everyone should be able to have a nice break on these dates and feel free to go and celebrate or relax or do whatever they wish, but I'm doing this for the game!". That's the good thing about creating something - you get to design it how you like it... and then those that like what you like, like the creation... and those that don't, don't!