AFAIK, in such cases, if the user has ample/sufficient proof that he owns the account that initially published/posted the article in another platform, social media or whatever, then they prolly wouldn't be banned, the only problem here is the means by which such user is going to prove beyond reasonable doubts to be reposting an already existing work of his.
That's not too difficult to do and prove. One way you can prove the article is yours and that the account that posted it belongs to you is to put up links in the source someone claims you stole it from that point to all the other sites where you posted the article. That should include Bitcointalk. That's sufficient proof that you are the same person.
Or you know the original poster and/or paid him to help you.