sir atleast give them a consideration to defend themselves before you ban each username in this post,i say contact them one by one to answer the accusation if that is true,if they dont defend themselves then ban them
Not trying to be a dick but if others were given zero tolerance regarding the matter, why would these people involved be different? Copy pasting is one of the worst ways to raise activity or be paid for signature campaigns. If you have nothing to contribute then better be quiet and just carry on.
OP, if your mod is active in the Vietnamese board/thread, these reports will get handled sooner. It's cool that you laid this matter on the table for further (hopefully) action by the moderation team.