1. Mainstream media in America always gives the (claimed) victim the "benefit of the doubt," especially when it's impossible to disprove, such as in PF's case. What's more, the figure of controversy is a minority woman originally from "one of the most brutal dictatorships."
2. Mainstream media also focuses on what's newsworthy. PF affair may be going viral among the Chinese American community, but it barely attracted any attention from the public. What is the public interested in now? The economy, gun violence, immigration.