When you go to court and cite previous cases, you are responsible for ensuring they are real cases. If you can't do that, what exactly is your job as a lawyer?
Big court case where it's pretty clear the plucky good guys aren't going to win it. So they hire hackers to break into westlaw and give the opposition fake cases, then bait them into presenting those cases - and call them out in it.
to convince some (judge/jury) that your client is the one to win the trial. ethics are meant to be the definer of how far to go in that cause with licensing boards being the ultimate decider if you've crossed the line and are allowed to continue in the legal practice.
so a clever comment attempting to prove a point is not always indicative of a proven point ;-)
That maneuver by Ross Chastain? It is banned.
No, the definition of "ethics" is "moral principles that govern a person's behaviour or the conducting of an activity."
If you feel compelled to resort to immoral behavior to win arguments, you already lost, and your contributions to society are a net negative.
Your argument is like stating that ethics in life are meant to be the definer of how far to go in that cause, with police departments being the ultimate decider if you've crossed the line. However, if you rob and murder random people without being caught by the police, you are undoubtedly an utter failure in life.