Both cases are highly serious and rejected. But there is a difference between the two:

Plagiarism: It is possible for anyone to verify and confirm what is plagiarism or not.
Scan: can only be proven by people who have suffered the scam.

Therefore, it becomes easier to ban a user who commits plagiarism, because it is probable by anyone in the face of evidence.
As for those who comment on the scam, only those who suffer from it can present facts, facts that third parties will not be able to confirm.

So, with regard to the coup, it is up to each one to evaluate based on the analysis they can and should do.