It was against another man, but the boys who accused Michael Jackson were lying. That's the first thing that came to mind.

Also, you want to talk about anti-male bias, what about the focus itself? We hear about whenever a high profile man is accused, so if it does turn out to be bullshit, we can point to plenty of women who lie. We often don't hear about it when a man accuses a woman, falsely or in truth. So it's harder to point to lying or truthful men...because we never hear about them accusing anyone in the first place.

One of the big high profile male accusers at the moment would be Johnny Depp...and the only reason we're hearing about his accusations is because it's in response to a lying, abusive woman trying to destroy his life for years, and doing considerable damage to him.

There's your anti-male bias. It's how society at large treats the sexes, it's not about some big female vs male conspiracy. There's plenty to criticize in sex relations without claiming all women are genocidal liars. That's just not true, or productive, when there's actual issues to discuss.