I didn't want to start a religious/political debate. However, there are specials on for such things as St Patrick's day (How many players are Irish?), Hallowe'en (upsets the evangelical christian players). It was meant to be a gesture by players themselves, rather than imposing something on them.
I personally, will not attack on Christmas day....just my little contribution to world peace

(And it stops my wife complaining, that she's a CC widow

) I may be daft, but hey...it's only a game at the end of the day.