I'm glad you liked the post, and I stay away from NC for the same reasons. I don't think you're picking on me. ;)
However, my first reaction when I saw only the bot post was to be a little irked. Both the name of the bot itself and something about the text made it feel a little like getting hit with a comment from cheetah.
I'm trying to think of suggestion for rewording it so it comes off more as 'We'd like to help you improve your articles' and less as a policing-bot type of thing. Perhaps something like:
"Hello, I'm a bot that checks to see if linked images have good attributions. By encouraging people to source their photos well and following steemstem copyright standards, we hope to improve the overall quality of the blockchain.
One or more of your photos either requires proper attribution or are licensed in such a way that they are not free to use. "