You know from your own experience what some of the moderators can be like on these forums, power tripping egotistic assholes. Since there is apparently no moderators active here then you won't face this adversity. But this site though mostly entertaining in part, may not be totally suitable for what you want to achieve with your son. There are a few members on here that would definitely be a good influence and I'm sure would be happy to assist you where possible. But there are some that seem to just enjoy engaging in what appears to be trolling, bickering and rude insulting behaviour. Though this is unfortunately real life and possibly good life experience, it may not be something you would like your son exposed to at this moment in time.
Hope this helps.