Was surprised no one in the vid said Die Hard (somehow feel like I knew Elf was Cam's xmas movie). Since you asked, personally I disagree. Its an action movie that happens to happen around Christmas.Well, there's only one correct answer to the question regarding the best Christmas movie, and Leo already has a gif from this movie in the OP. Change my mind.
Virtually nothing else in the movie other than the time it happens has to do with anything associated with the holiday. I think it just became a tradition people rolled with to watch a good action movie instead of sappy heartfelt movies about the spirit of giving and family around Christmas time.
But I've never had anyone change their mind about this, so I doubt anyone will now.