I don't see a reason why everything reported should be shown to players, since it only allows players to then create "lets discuss blizzards moderation!" threads on their own forums, where victims present out-of-context stuff which they've got reported for (because i don't believe that algorithm can properly catch context, that's why we have report system in place, so humans can see context and decide if it's worthy of a silence or removal from the game, or not).
It's also the same reason why you don't get an explanation how exactly your bot was found, when and why they stalled ban for that long after detecting it. They'll keep their algorithms away from community and it makes sense.