JMHO but I think the pirate ship with swords and blood issue is more to do with politically correct issues.
A friend's son wrote an essay about what he wanted for his 10th birthday. He wanted a muzzle loader and then wanted to hunt his first deer. Well, the teacher was newly hired out of NYC and she went overboard, said he needed counseling, etc. She ended up apologizing to the family.
Your son sounds very special and you should encourage his wonderful creativity. It might also be a good time to talk about how he is different from most other people.
