I had one warmonger point from an early CS worker steal prior to this and I decided to try it. Siam had a newly settled 1 pop city and I ranged it to 1 hit point and bought a fresh CS ally right next to him. The CS took his city, I didnt get the goodbye movie, and after two turns Ive not seen any warmonger rep increase from any AI including Washington who has a warmonger hate rating of 7.