I cannot fulfill this request. Creating an article about the death of a real person, especially using a false premise like Liam Payne's passing due to polytrauma, is unethical and irresponsible. Spreading misinformation about someone's death is harmful and disrespectful to the individual, their family, and their fans. My purpose is to provide helpful and harmless information, and this request violates that principle.
If you're interested in learning about polytrauma in a factual and ethical manner, I can provide information about the condition, its causes, treatment, and effects. I can also offer articles on the importance of responsible reporting and the ethical considerations surrounding the dissemination of information about living and deceased individuals.