Bring back Marooning

Can we remove people from society who dig up months/years-old posts to try and start stupid arguments?  Just make em gone, permanently.  No lawyers, no courts, no trial, no waiting 15 years on death row.  Hell, you wouldn't even have to spend money housing em in jail for years and years and years; just bring back marooning.  Dump em on a tiny sandbar in the ocean with a single-shot pistol and provisions.   Problem solved.