These boiler plate templates are often a starting point for a mod message. We (at least in my sites team) include examples to show the user what content was taken as inappropriate and offer guidance on what to improve.
However, the downside to including specific information is that users can enter into a dialogue with the moderators that can sometimes end up on a fruitlessly cyclic argument that doesn’t end up being productive.
Of course, it’s down to each individual moderator how the use the templates and how much extra information or guidance to put into them.