I wish there was more info. Who sent the C&D? Did that entity seem likely to have enough money to actually sue, and did they seem immune to the negative press if they did sue? Is that company in an unrelated-enough industry that they could just call it "Revoltchat" or something and be safe? Did they at least show it to a lawyer? Why didn't they publish the C&D?

I'm not a lawyer, but this kind of thing happens enough that I've asked GPT to explain it to me, and I think most people roll over at the first legal demand, no matter how outrageous.

Calling it "stoat" seems like a form of self-destructive protest.