Fowler made accusations of fact. They can be proven or disproven. She didn't say opinions like "they were meanies to me" or "they gave a promotion to a man whe

Fowler made accusations of fact. They can be proven or disproven. She didn't say opinions like "they were meanies to me" or "they gave a promotion to a man when I was the better performer." In that case, people would likely decide who to believe based on their priors. Instead, she made specific accusations that, if false, Uber could easily show as false. Note that Uber has not even done that. Likely because she can prove the claims are true, in court if necessary.