IMO, freedom of speech refers to content, not necessarily delivery. There really seems to be three types of speech. Private (home), subscribed (church, book, TV show), broadcast (commercial, billboard sign, office cooler, email inbox)). The difference being how wide the audience, and how much freedom they have in listening to you.

The problem IMO is ‘the internet’ mixes the three basic types of speech. Things that feel private often don't end up that way.

PS: A mortician making a book based on autopsy photos seems reasonable. But, sending those same photos to a parole officer or someone else you know less likely to be acceptable. Though in book form it is once again probably ok, same content different context.