I don’t condone plagiarism as it’s disrespectful to the original creators, especially without giving any credit. One solution is adding a warning on top of the “Post” button that says “Please do not copy other people’s words, you can get permenantly banned” or something similar. People not fluent in English don’t know what the term plagiarism is.

Also, If they have a history of doing bounties then most likely they are copying and posting random content as an advantage and should be permanently banned.