I agree with what you meant when you said to start coping another similar work but I don't think you should have said "rip-off". Also you should clarify that you can't just copy-paste something and edit it. You can copy the structure of a plot, motivation for characters, how certain events unfold, etc. But you should never "borrow" a whole plot or a whole character. You should copy what suits you and in small doses. It seems obvious but look at this comment section. Everyone is triggered by the word "Rip-off" and the lack of clarity regarding what should you copy and how much.