> Artificial Intelligence (AI) is trained using human-created content. If humans stop producing new content and rely solely on AI, online content across the world may run the risk of becoming repetitive and stagnant.

This is an absurd thought. AI content is still created by humans using AI, just like photos are created by humans using cameras.

Also who says that AI can't be as creative as humans or better? Why would humans be better at being creative "manually" instead of with machines?

I say AI creativity will be better than simple humans at creating stuff. Humanity will overall benefit from it and the world will be less dull.