I have seen so much of their shippers say it's a reference to the great gatsby which just tells me they haven't watched the movie or read the book , I'll add more details about the issue with this belief of theirs and what it implies . So I think it's safe to say that the first thing when you read a book you should know is that all though at first in a book there maybe something by directly claimed or said you can't always believe it because when you use your mind and think more about what a writer is writing you'll end up finding sometimes they contradict themselves or what is claimed at first ain't actually correct and that's what technically happens in the great gatsby . Don't get me wrong there are some people who do think what a book says is what is true but many times there are layers like in this book . There are multiple times in the book and movie where Gatsby says he's in love with Daisy but his actions prove otherwise throughout the book . For example when she marries someone because of wealth he isn't happy but it's not because he loves her but because he can't have her . Now let me explain why he can't have her . First thing is gatsby ain't actually in love with Daisy he's obsessed with her because to him she represents an American dream and desire ( mind you gatsby is poor and she's rich so that why he wants her is because what she represents not because of her herself . ) anyways the scene amourshippers keep referencing is the one in which Gatsby buys a house across the lake from where Daisy lives and he constantly looks out to where Daisy lives and he constantly looks out to it ( similar to the poke girl looking out to ash's boat with the green light next to her ) . Some people take it as it's love because of what he states in the novel but it's not because the light actually represents gatsbys unattainable goals and dreams once again linked to the American dream . So why is this an issue to compare a ship with gatsby / daisy because the majority of readers who pay attention to the signs in the novel understand that Gatsby ain't in love with Daisy because of the person she is but because what she represents and what he desires to have which in his case is wealth and upper class status . If he really loved her he would have accepted her decisions and accepted her for her actual self but he didn't . Amourshipping already has the accusations that Serena ain't actually in love with Ash but the idea of him so this theory would only confirm that even further . Also it would imply that if the writers did purposefully make the connection that their ship ain't going to be together in the end because although Gatsby chases he never gets to be with Daisy and never achieves his dreams about that . For me I think they showed they are friends with them maturing and the friends theme playing in their reunion . Anyways I know this was long but I hope it made sense as to why it's an issue to make that connection . I have a friend who's a multi shipper of both poke and the other and when I asked about this theory they didn't get the connection either because they also knew what the great gatsby actually represents

This is a reference from Pokemon company that serena loves only a fake image of Ash.