I strongly disagree with your thinking that the author can't make a better case. The previous sentence before the one you quote is this:
> Freedom Project’s executive director at the time was David Heppard who was convicted as a teenager for taking part in the gang rape of a pregnant seventeen-year-old.
And here's what the author COULD have said:
> On February 18, 1994, Heppard and five of his friends spotted a five-months pregnant 17-year-old who is referred to in court filings as “J.H.” Cecil Morton III, one of Heppard’s co-defendants, proposed raping J.H. Morton stopped the car and he, Heppard, and a third member of the group forced the pregnant girl into the back seat. She begged them not to hurt her and Morton threatened her into silence with a machete; someone in the vehicle told her that if she didn’t shut up, they would kill her unborn baby.
> They drove her into the woods where five or six of them raped her orally and vaginally. J.H. was then forced back into the vehicle completely naked and was ordered to direct them to her apartment. Some of the boys threatened that if she failed to do so, they would murder her and dismember her corpse.
> Along the way, Heppard orally sodomized the terrified girl a second time and she was raped by two of his co-defendants upon their arrival. As the pregnant 17-year-old girl was being raped for the third time that night, the boys who weren’t otherwise occupied robbed her apartment, stealing a number of items belonging to her and her boyfriend. They then left the apartment, telling her that if she ratted them out, they would come back to kill her.
> Once the boys were gone, their victim called a friend, who contacted the police on her behalf. Coincidentally, Heppard and his partners in crime were pulled over by Pierce County police officers at the same time the rape was reported. A call came over their radio regarding the assault, but the cops did not make the connection between the rape and the teenagers they were questioning; however, the rapists heard the report and were now aware that their victim had contacted the police. Heppard and Morton allegedly began plotting to have the girl murdered, but were arrested before she could be silenced.