To some people, the best Christmas movie is Die Hard. To some, it’s Gremlins. To me it’s The Transformers Movie.
But you might point out that the reason those movies are held up as Christmas movies is because Christmas plays into them! And, wittily, they might say, there is something essentially Christmas-toned about them which will allow you to watch them on a technicality on your Christmas weekend, as if you need to cheat the rules to enjoy your own time off, or the smugness makes the experience sweeter. You might want to make a point of the use of Christmas as a central plot element in Gremlins and that’s great, but that’s not why The Transformers Movie is a Christmas movie to me.
The Transformers Movie is a Christmas movie for me, because it, to me, feels like Christmas.