I hope your son wouldn't alter what my children heard without asking their mother's permission first. That might be the opposite of helpful and reassuring.
If you're happy with everything then you don't have to use the childcare. It might be helpful for some others, that's all. Last meeting we had talk of a shooting, a man who had become a ghost talked about a very worrying situation, and a few people shared things when they introduced themselves that I didn't want my little ones to hear. Those people should be allowed to say what they want at the meeting, so this is one solution.