Your son wants to learn stuff and the computer helps him with that. People that want an AI girlfriend don't care about the knowledge and usefulness of ChatGPT, they just want to use it to feel less lonely. Not at all the same use case. Although I agree with you, it's kind of sad that a lot of people will probably use chatbots to make up for no human contact in their life instead of using it to learn stuff and/or to fix their code/excel/etc.