Because these articles are given very vague search queries, for example, "my left side hurts." The article will describe all possible diseases related to this symptom, from neuralgia to cancer. Unfortunately, only a doctor after diagnosis can tell why the side hurts. And the most terrible of the heap of diagnoses in the article, the person selects himself involuntarily, because he is afraid for his life and health. This is both useful and harmful, in some cases, a person develops an unnecessary panic, but in some cases fear prompts him to take care of his health in time.
I would not say that this is done intentionally.
Medical articles are often ordered on the content exchange. There they are written by people who do not understand anything in medicine - they are just freelancers who are ready to take on any order. If only they paid. And that is why I recommend everyone to be skeptical about the texts on the Internet and trust only authoritative resources.
Well. The copywriter from the content exchange does not set himself the task of intimidating someone. His task is to hand over the order and receive money. And in order to hand over an order, he needs to reach a certain volume. And since he does not understand medicine, he has to copy from other sites everything that can be written off, including symptoms, including the worst.