Yes, often more power actually. When you’re trying to convince someone of something the most powerful and swaying argument is one that includes a certain amount of emotion (pathos). So for example, instead of just speaking about dying animals to argue for climate change, it is much more effective to tell a personal or emotional story involving the effects climate change has had a you or other real people. Hope that helps :)
The best answer for this question would be:
Alvarez grappled with the issue of writing a novel about a dangerous subject.
A central idea focuses on the dominant impression of a story in which a general truth of the story is found within it.