Surely this is gross professional misconduct? If one of my postdocs did this they would be at risk of being fired. I would certainly never trust them again. If I let it get through, I should be at risk.
As a reviewer, if I see the authors lie in this way why should I trust anything else in the paper? The only ethical move is to reject immediately.
I acknowledge mistakes and so on are common but this is different league bad behaviour.
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