It's a sad truth about leavened church buildings, they don't care about distasteful, because most are so bound up in idolatry of serving something they call Jesus they've created in their own head, that they've taken after the SJW types that most of them will also openly condemn...if it hurts their feelings, it must be wrong.
Isn't hard to chart a course as to how it might have happened, I mean with so many people putting importance on birthdays, then obviously the worldly church buildings would (falsely) but logically conclude that Jesus' birthday must be the most important of all. I can understand why it isn't specified in the bible either because if it were, then the problem of "It's Jesus' birthday, YOU MUST CELEBRATE IT OR ELSE YOU'RE ANATHEMA!" would be so...much...worse!
Actually the more I think about it, the more modern church buildings are becoming more and more gnostic in their core philosophy...we have a book that has things laid out, the best interpreter in The Holy Spirit...and so many people want to add things to what's required...makes my head hurt thinking about it but it all stems from pride "we did this so we must be good"...so many people are blinded by that pride that the whole argument they love using "don't judge christian brothers" and "the scholars say:" or "I have a DD, I know more than you now shut up." also "What would you know? you're not an expert on the matter"...I tried telling a pastor about christmas and telling him that I was in paganism once and yes, saturnalia and yule are holy days to them, but there's also the other supposed argument "that's not what it means to me".
These people really don't know the occultic mind set, ever wonder why you see so many statues of Mary and catholic "saints" in Haiti and Jamaica yet they are basically ground zero for modern day voodoo? Because their "queen of the spirits" or erzulie and the virgin Mary represent the same deity to them, even Wikipedia of all places refers to erzulie as "The Black Madonna of Częstochowa"...so in paganism of all types around the world, you can worship the same god under many different names in many different ways, the face is nothing more than an icon for people to look to, which I'm pretty sure is one reason why the LORD God gave us the second commandment in Exodus 20:4:
"Thou shalt not make unto thee any graven image, or any likeness [of any thing] that [is] in heaven above, or that [is] in the earth beneath, or that [is] in the water under the earth: {20:5} Thou shalt not bow down thyself to them, nor serve them: for I the LORD thy God [am] a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth [generation] of them that hate me;"
Also something to think about, once time ceases to exist, what will dates and times matter? I think one of the reasons God will reject them is found in Romans 1:24: "Wherefore God also gave them up to uncleanness through the lusts of their own hearts, to dishonour their own bodies between themselves: {1:25} Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen."
Every single pagan tradition worships a thing but openly reject the creator of those things, and if you look at it really closely, those who hold close to those supposed holy days do exactly the same thing.
Sorry for going on about it a bit, it just really frustrates me when even just trying to tell people about christmas or easter or similar times of year and what they really mean, most don't want to know and act like you slapped their disabled child if you try and show evidence that not only are these celebrations not biblical, they are out right evil.