DM thread on meta (admins only): https://meta.discourse.org/t/your-post-in-beginners-guide-to-install-discourse-on-macos-for-development/92110
I sent a DM flag to @mrded to suggest he edit previous posts instead of deleting them and posting new ones. He self-deleted the post I flagged and restored the older post, and that caused @system to send the automatic “agree with flag when post is deleted” message.
Not really a big problem, but someone could get really scared & confused and think that the admins saw that flag & message.