When are Christians going to stop thinking that they own Christmas? This is the 21st century, Christmas is no longer just a religious holiday. It’s a secular holiday. Do you have any idea how many non-religious people celebrate Christmas, I know atheists, Muslims, Jewish and Krishna people that all celebrate Christmas as a secular holiday just like they do Halloween or Valentine’s Day .
Thats the problem I think you are getting confused with the difference between state recognized secular holidays and religious holidays. They really aren’t the same thing. No one is saying anyone has to celebrate Christmas on the 25th of December just that this is going to be when the state is going to do it. And it is true that this more closely aligns with the state secular practices of most western European countries the US, Japan and Australia. So yes it makes absolute total sense. You just need to learn and accept that for many many people Christmas is not at all a religious holiday.
But no one is stopping anyone from also going to Christmas mass on January 7th