For lower ranking randoms (most often trying to get quickly into sig. campaigns), sure. For established traders who didn't know better?
Who didn't know better? Who are we trying to kid here?
User wears a paid signature. He has been caught copy-pasting. Not once, but multiple times. That "usually" results in a perma-ban.
What has the fact that he is an established trader have to do with anything? Lots of people have given him positive trust. That doesn't mean that plagiarism can be condoned.
So: Doing wrong = bad. Correcting wrong = Bad.

He, obviously, started doing that after acknowledging the problem (after my PM) in this
post. Would you rather that he left them as is?
He is editing the posts that I have quoted and he is doing them today. If correcting posts is all that it takes to escape the ban hammer, I am sure Meta will be filled with posters trying to get their bans overturned. They would all scream "Give me another chance to correct my wrongs"
There are internal moderation policies (although I'm not sure whether I'm allowed to share that; or at least what I remember of it). You should
really take a good look at the user's posting history (outside of collectibles). e.g.
Warning about BitConnect.
The user may have made very good posts in the past. You should merit these posts. That doesn't change anything from the fact that he has been caught copy-pasting.
[1] They are often not tagged, but just banned. Maybe neutral feedback (as long as it is not repeated again).
True. They are often not tagged, but banned. Once they are banned, there is no need to tag them. But again, the bar has been far lower for DT to tag accounts for shit-posting. And blatant copy-pasting is the worst kind, intended to cheat signature campaigns.
It would be clearly double standards if a user is able to get away with it.