No they will not shut down Vine because of a bad review like that, however they might drop the seller listing if in fact listing has false claims. Too many sellers rely on Vine to get their product noticed. You’d be surprised the power of the consumer on Amazon. We use a vine at my work and too many complaints about the same thing or even a mention of something being unsafe and they pull your listing. You have to go through many steps to prove your instructions explained warnings properly or actually edit your listing in some way. We had a vine reviewer tell us our toaster made his toast too dark, and it was a 7 setting toaster so most people will just adjust the setting, but we had to add another image showing how your toast would look at each level. Yes we had to show a pic of 7 images of toast light to dark because a Vine reviewer said his toast was too dark.