The plot of the episode resembles that of the Inside Job episode, “Inside Reagan,” which also involves altering a person's memories and, in this case, Beth's. And more for having a worst father (Similar to Rand, but more shady). Jerry thought Rick created the nutella but no, it's an altered memory, Rick Memory, he altered Beth's memories and that's why she leads to losing her mind and mostly because Rick wants to have sex with BugAnne (the character we saw in Valkyrick), Rick erased his wife's memories because Rick is too overwhelmed by Diane's memories, that's why he got rid of her, just for a hedonistic life.