So when
this happens after I report a post for plagiarism:

and the user escapes a ban, for the second time, I have to admit I'm quite tempted to red trust users for plagiarism. It's just repeated dishonesty. I would never trust either of these accounts with a single dollar knowing how comfortable they are with lying.
Every word either account has ever written is a boring plea for merit.
When you report, won't the original copy be sent to the mods?
So even if that guy edits his post, there's no escaping.