Is there a way to dispute a video that has been set as Made for Kids (Set by Youtube)?
Are they assuming if a video has the words Kids, such as Kids React Too, is made for kids, just because it has kids in the title, and kids in the video?
If my channel has some videos that are Play Ideas for Parents, and shows the kids playing the given idea, and is directed at adults, or parents, then it should not be labeled as For Kids.
Kids is also a term used by some communities, such as gamers, to refer to other people in the game as "bad at the game" or "squeakers", or "annoying" or just a descriptive term for people not better than you, used in a comical way. Many use that term in the title. I can see their videos possibly getting set as For Kids.
I seriously doubt that youtube has the manpower to watch every video, so it's most likely an automated process as well.