Reddit user u/pushrocks theorized that Ralphie orchestrated everything for Jackie Aprile Jr.’s death, all of which stemmed from a story he told the boy while dating his mother Rosalie. Theory refers to an episode in Season 3 in which Ralphie explains to Jackie Jr. “how Tony Soprano (current boss) and Jackie Aprile (dead former boss) made their mark by robbing a card game.” Some time later, Jackie Jr tried to get ahead in the family business by robbing a high-stakes poker game himself. However, the work goes sideways, ending in a shooting and the young man is eventually knocked out for his impulsiveness. From here, u/pushrock added, “couldn’t help but remember that it was Ralphie’s son who got Jackie Jr.’s idea of a card game in mind.”
It certainly matches the nature of the intelligent captain. Figuring out how to make situations work in his favor is Ralph’s strength, regardless of failure. Keeping this in mind, Ralph lays the groundwork for Jackie Jr.’s sure-fire plan. is justifiable – but why do it in the first place? Well, it may seem a bit long, but in the mafia world, where blood is thicker than water, “maybe if Jackie Jr goes, his future children with Rosalie will be the obvious heirs and therefore heirs.” favors him over the Soprano family,” according to u/pushrocks.
We’ll never know if that was the intention, as Ralphie was also killed afterwards – something he certainly didn’t anticipate.
https://www.looper.com/749273/the-ralphie-theory-that-changes-everything-on-the-sopranos/ Ralphie theory changes everything on Sopranos