No?! You Lie!!!
You don’t lie!!! Amazing, I was just writing my own API reader, this just saved me hours!!!
EDIT:
Even though the WP API is standardised not every source returns the top image as part of the story and often exists elsewhere in the json like OG:Image and whatnot, you can see this in your example, the images attached to the stories are actually an ad in the body of the story.