Instead of listing the numerous reasons people dislike her, instead, I don’t want her to have any focus in the movie for purely aesthetic reasons. Her dialogue is stilted, the writers don’t know what to do with her, and she simply can’t carry a scene.
there was no advantage of showing Starlight in the preview.
She’s not shown doing anything important, so its not going to trigger the idea “Starlight is going to have a big role in the movie” from too many Starlight fans, but on the other side of the fandom divided on Starlight, it has the chance of triggering thoughts like “No, not Starlight” or “They’re putting Starlight in everything to steal screen time”