jelly My personal answers to your questions.
dismiss it all as a fairy story
I describe all religious mythologies as stories, because they are.
accuse them of hijacking others celebrations
Because they did.
and basically call it all a big pile of shite
I think all organised religion is a pile of shite, designed to keep privileged people in a position of privilege.
then have the gall to celebrate Christmas just so you can stuff your faces with mince pies
I celebrate "Christmas" as a way of breaking up the winter, same as many many other people have done throughout history in climates such as ours. Bit more than an excuse to eat mince pies. Plus there's the whole thing previously covered in this thread where Christians do not have exclusive rights to a midwinter festival.
but it isn't acceptable to do that to other religions?
I dislike and disagree with all organised religion, especially theistic ones.
There's no hypocrisy here.
What does drive me mad however is the "poor little Christian" routine, especially in the UK where the church still have influence over the lives of many people whether they are Christian or not. My heart is not going to bleed for poor victimised Christians until their religion gets it nose out of everyone elses business.