So? Does that at all invalidate the argument that humans have changed the way, speed and reach of viral infections and viral mutations? It's like saying humans have always gathered in groups. Sure, but modern metropolitan areas come with their own challenges that differ from tribal cultures.

Poultry that has been bred in a way that reduces variety, with more on a certain square footage, with more being transported outside of their natural habitat and migratory range. The problem shouldn't be exaggerated, but human influence shouldn't be ignored.