I don’t know why you would say this. Here is a screenshot I took yesterday.

Mainly because I’m one of the moderators of the community, and so can see some more detail on what happened. I wasn’t aware that AutoMod is set to notify people when their posts/comments have been moderated, which is why you received that message.

As you can gather, AutoMod isn’t something community moderators have deployed themselves (which is why I’m as unaware as you are of some of its functions), but is something from the admins in an effort to help moderate the instance as a whole.