The only thing that still unclear is where is the original source? If the post from steemit platform is the source we are talking about then three people did copy it to bitcointalk without providing a link.

What Is Your country Saying About Cryptos? by valnd (account is not banned for plagiarism, but neutral-tagged by The Pharmacist for shitpoting)

UPDATE! G20 CURRENT REGULATORY STATUS by mikejack (account is banned for plagiarism? and also tagged by The Pharmacist for account biying/selling)

G20 should end Positive For Crypto by Mpamaegbu

Mpamaegbu claims to not have provided a link to the source but what actually was the source? If he copied the message from steemit and forgot to put a link, then it can be considered an error. If, on the other hand, he copypasted the post from bitcointalk, then it is blatant plagiarism because his post was not translation nor quotation.