YouTube decided my latest video is "made for kids" and now I'm scared....

Hello all! I have a YouTube channel where I've been publishing my animations for a few years now. I have 65k subscribers, but most of them are inactive because I rarely post and when I do, it's poorly managed. However, for the first time, after posting an animation, YouTube decided after three days that the video is "made for kids." I appealed the decision and lost. Now, the video will remain marked as "made for kids" forever.

Aside from being very annoyed because the video, like all the others on my channel, is not "made for kids," I'm now afraid that anything I post in the future will automatically be flagged by YouTube as "made for kids."

Does anyone have an idea of how this "made for kids" classification works?

For those curious, my channel is called hupeanimation, and the video in question is the latest one I posted (Buzz Light-year).

Thank you all!