It's a bad ad and the AI just makes it worse. The song doesn't rhyme well, the lyrics doesn't make much sense (they feel very forced), the things they portray are mostly unrealistic/exaggerated, and the cherry on top is that McDonalds is somehow a respite from the chaos of Christmas. I've never once in my life thought of McD as somewhere comforting to go. It's just a bad ad period.

Also, no one wants a bad (probably also AI-generated) song about how terrible Christmas is. I'm not saying it's not terrible but no one wants a song about it.