its so much not a joke that a comparison to a real life example might be against the EULA of this forum and cause a temporal ban, but let me try:
Its like shooting at somebody and missing by an inch and saying:
Dude, thx god, that i missed you, you might have get killed by this. Imagine all the blood stains on the carpet...
or something!
Scammers are like killers, they kill players (or better to say their pedcards and their fun). In several countries your punishment is death for beeing a killer. So in EU we treat scammers just like that, we make sure they get locked down forever. Imagine you can convince that player you were just a joker? Who knows if you not go to the next best nib and try this again? So jokes about beeing a scammer are like jokes about beeing a killer in RL, only crackheads joke with things like that.