Oh the irony with being OK with Christmas and its Christian origins.
Christmas is the result of Christians co-opting the traditions and festivities that many Pagans already participated in as part of a celebration of the winter solstice. As Neil deGrasse Tyson put it, cultures around the northern hemisphere could tell that the Sun's peak kept getting lower and lower in the sky, until late December when it started to rise again. They celebrated this rise in their own way, and Christians decided that saying "you should thank Jesus for that" was a great way to spread Christianity. Which is why most of the traditions around Christmas don't make any sense when compared to the rest of Christianity (see also: Easter).
https://www.cbsnews.com/news/the-une...as-traditions/
So it's taken back from Christians and turned into a celebration of modern Western culture: loud, consumer-focused, and seemingly ceaseless. And I love it.
And yes, Thanksgiving is now just an excuse to have a big family meal, and to say what you're thankful for. The origins have effectively zero meaning to the modern American.