Kids would be much more likely to answer questions correctly than adults because it is much more recently learned. Most people don't use the knowledge, so over time it is lost. It's just not as important to most people as Facebook, Instagram, Twitter, Tik Tok, or whatever TV show they are watching.For the most part I agree with you, and I also believe it has to do with socio-economics.
Parents that are involved with there kids education have better educated and more well rounded children.
Now, I myself use the three branches with people what that want to talk politics with me.
I say before we start this conversation, what are the three branches of the federal government?
If I get the blank stare, we don't continue with the conversation.
I will say those that can't answer that simple question, all have parents that failed at being parents.