1. I don't totally disagree but I don't think it's effective or suitable for teaching children. I think they could demonstrate it in a different way. For example, maybe they could use the idea of Genpatsu-kun or Nuclear Boy getting sick.
2. I would understand why people criticized these videos. I think these videos could be made in other ways.
3. I prefer Genpatsu-kun because the Nuclear Boy looks too real. Genpatsu-kun seems more appropriate for children.
4. What I said in 3, if I were to put a poster I'd choose Genpatsu-kun.
