hi , I see cheetah came to visit. If you are duplicating content, you need to add proper citations and links to the original publication. You should also state that if it is your own or someone else content.
As the steem rewards pool is limited, we have some 'protections' to try to ensure the rewards pool is given to content that adds value to the blockchain. Duplicate content tends not to be seen as value-adding. The message from Cheetah is to allow curators to asses the value it brings to the blockchain when giving or removing rewards by upvotes/downvotes.
Does that make sense?
RE: 4 Methods to create a Unique list of records in Excel