It's also just duplicated work for the producer. I'd rather someone just visit my little blog and read my article on the context where I know the syntax highlig

It's also just duplicated work for the producer. I'd rather someone just visit my little blog and read my article on the context where I know the syntax highlighted coffee looks good, my dynamic examples render, etc. There probably are done folks with great intents, but there's legitimate reasons to channel people to your site as well.