An image is added to an article to catch the reader’s eyes, so the article gets read. I pointed out that this image didn’t transmit a proper impression of the article.
If you are as superior as your condescending attitude suggests that you don’t even get a first impression of things, good for you. But us, mortals, will have an impression of the article posted by taking a glance at the thumbnail or the cover of a book, if that were the case.
Of course, that first impression will change after reading the actual content, but getting the first impression right gets you more people looking at the content.