No, I’m pretty sure you’ve got your stories mixed up. That yahoo article you linked is entirely about Seth Rich. My superficial scanning of the Wikipedia entry is mostly correct.
I’d like to link to original discussion of pizzagate but that’s a little hard now. When you search for it, it’s overtaken by news reports after reporting on the more caricatured aspects of it picked up steam. While pizzagate was meant to be damaging to Clinton inasmuch as she’s connected to Podesta, that was the issue. There was no real Clinton involvement, yet the straw man argument was that Clinton was running a prostitution ring. The fact that the discussion that became known as pizzagate was distorted to comical levels allowed the larger issue to be ignored (which included Epstein).
When I search for things that detail anything, the best one I’ve come up with is a Joe Rogan interview with Alex Jones. Now, do your best to avoid the knee-jerk reaction. I’m not suggesting you buy anything Jones is selling, but if you want an accurate view of what the whole issue was about (and not “Clinton runs child prostitution ring”), then I’d watch the video for “Joe Rogan what is pizzagate?” on YouTube. Again, I feel compelled to state that you can make whatever you want of Jones, but mischaracterizing what “pizzagate” was asking is something that kept the issue (i.e. people like Epstein) out of public view because it gets cloaked under right-wing conspiracy meant to tear down the Clintons.
ETA: my offer still stands of $50 to the first person who can produce JFC discussion of someone here actually arguing that Hillary ran a child prostitution ring from the pizza parlor.