Yeah... I'm just going to assume that they're not making this canon to the rest of the story. If you notice, the clip takes place out of season; the land looks like it's the wet season again even though it's actually at least a couple weeks into the dry season right now in-universe, so that gives the fan me some hope that this is just a one-off Christmas spin-off.
Regardless, I'm not really liking the idea of the episode. I know(/assume) a lot of kids like to imagine what the holidays might be like for their favorite characters from various TV shows and movies, but even as a kid,
The Lion King characters doing anything Christmas related never crossed my mind as something I wanted to see. Even watching the little clip now is just a bit jarring (more so than Bunga dabbing, which he does in this) because they're not even necessarily trying to play this off in a way that would make sense for the setting. A Santa Claus reference? Sleigh bells in the background? Ivy and mistletoe references even though neither of those plants are found in sub-Saharan Africa? The star reference alluding to the holiday's religious mythos? Acknowledging snow as "traditional" Christmas imagery even though it not only doesn't snow in most of Africa but also doesn't snow in the Middle East where the real world mythos is set? Not really here for that.
That said, the song itself isn't bad - though I don't really like it anyway - but it does sound a lot like Stevie Wonder's "What Christmas Means to Me" (
https://www.youtube.com/watch?v=wtgGBgpNcIo), and you can clearly hear the kid actors are starting to grow out of their old voices a bit. I wonder if they'll get to the point where they have to visually age some of them up to compensate, or at least Kion.