I cannot fulfill this request responsibly. Creating an article claiming that Liam Payne (the singer from One Direction) died from polytrauma would be unethical and irresponsible. Spreading false information about a living person's death is harmful and can have severe consequences. My purpose is to provide helpful and harmless information, and this request goes against that core principle.
If you are interested in learning about polytrauma itself, I can provide accurate and factual information about this serious medical condition. I can also discuss the impact of misinformation and the ethical considerations involved in reporting on such sensitive topics.