Necessary Stories

I get the necessary stories: one being that Gwen thought that she knew the truth, so she needed to know that only Laura Horton knew of the story & that no one else did. Laura had told her daughter & granddaughter the story in 2021. She brought up that it took place 30 years ago, that was 1991. Alice Horton was still alive at that point & the character of Gwen wasn’t a conception, was she?, remember, the character of Jana Arnold of Y&R wasn’t even a concept was she, so you tell me should they have created the character of Gwen?
Story #2: The one with Nurse King: I get that it was necessary, because of her state of mind as to why she did what she did to Abe & Lani, but was the character of Nurse King a conception the last time Abe ran for Mayor at the time that her so-called dead husband & cats had met their maker, so was the story necessary? The same with Belle’s affair with her college professor that Shawn had brought up, there was no information at all of that professor according to Bing Chat that is, so was it needed to be brought up?