It's good that he's not the jealous sort.
My Wife has the same issue about telling people how we met, but I really don't care how much she reveals about our lifestyle any more. She is much more protective of my feelings than necessary.
You could have him write them privately for you if he doesn't feel comfortable posting them here anymore. Perhaps he is becoming self conscious about revealing too much of himself in them. If so, he shouldn't be with you as he needs to be totally open and honest with his Mistress.
Besides, he should be happy that he has a talent that gives you pleasure, especially if his penis doesn't.