There is an interesting video essay about the concept of foreign movies being weird:
https://www.youtube.com/watch?v=voiBAjkJ-ig
The basic point of the video is, that Hollywood isn't the norm everything else has to be judged after, but Hollywood is but one centre of a big worldwide industry. And he provides examples of Hollywood doing the same stuff as foreign movies, it is just judged differently.
BTW: I was aware of Battle Royale being the template that Hunger games is styled after, because I watched Battle Royale back then, even before the Hunger games novels were written. Therefore I kinda feel like Hunger games is the kids version of Battle Royale.








But it's somewhat understandable. Every movie industry has its cultural norms that they rely on, so it might seem weird for some. 