According to the article/filing, she wasn't given specific reasons for the demotion, treated discriminatorily, and given a PiP that was unattainably difficult.

According to the article/filing, she wasn't given specific reasons for the demotion, treated discriminatorily, and given a PiP that was unattainably difficult. One would assume that choosing to file litigation against Amazon would be done thoughtfully / with a plausible rate of success; they have an army of lawyers. What informs the opinion that a PIPed employee isn't worth even listening to, esp. from a lawsuit? Amazon is not exactly a shining star for work culture, and this situation doesn't sound unfathomable.