i can tell that early on the writers just ran with this during the "fake backstory" because they needed something quick at that moment for that one episode. it's just very ill-thought out and also makes no sense for the story because it literally is not possible to "erase" a single person from an infinite multiverse. at what point does an alternate version of diane not count as diane anymore? what if in another universe rick prime *didn't* make the omega device or someshit? makes zero sense

lol i've just always had a silent dislike for anything diane related because she just has noooo interesting qualities at all and i never understood why there was so much fan content of her, she barely counts as a character. if anything i prefer back when that one OC was popular that people said was rick's wife or something. diane was only ever used as a useless background motive for rick's nihilism when it was never needed!! being a super-genius old fart with knowledge of the multiverse would do that to anyone! literally rick could have just done anything else to inconvenience prime to make it seem like he betrayed him and the story would be the absolute same. giving rick an ex wife that simply divorced him due to his shittiness would be infinitely more interesting to me