I recall one statement from SOP where Sister Ellen referred to Christmas and noted it becomes a bright spot in a long bleak winter for much of those living in the Northern Hemisphere. And much charity work gets done around Christmas that in all likelihood would not happen if there were no Christmas. There has been put together a book of writings of Sister Ellen's where Christmas quotes have been compiled.
https://m.egwwritings.org/en/book/757/toc
I guess we could get stingy and just cancel Christmas since there are "no verses in the Bible" mandating it.