Interesting story but nothing seems exactly wrong with any of it. Is it the case that prosecutors mostly make reasonable indictments because of the potential em

Interesting story but nothing seems exactly wrong with any of it. Is it the case that prosecutors mostly make reasonable indictments because of the potential embarrassment of having a grand jury naysay them, or should we just scrap the grand juries because prosecutors will anyway only bring supported charges? As a small optimization I'd suggest using a single judge or a smaller number (5?) of jurors for the same purpose.