Good analysis.
I was also thinking of posters on FR who may say something about Catholicism out of ignorance and intend to not even hurt Christ or the addressee. On the other hand, there are posers who deliberately know they are slandering or blaspheming either the individual, a saint or the church when they post.
Slander, defamation, detraction, etc., are all a form of damage, but not, I think, included in the specific topic of this definition.