Funny enough, I just published a story using the same Don't Walk image, BUT I combined it with a Walk image and made an animation. Should I be upset that this writer used that Don't Walk image?

How many stories are published every day on Medium? Thousands. Times 365 days a year. Since most writers probably aren't photographers, and there are a limited selection of free images online, sheer math says some images will appear on many stories on Medium. I looked at this author's stories and I don't recognize any of her featured images, except for this story.