"amplifying human bias" seems like a very soft way to put it. One should enquire whether if Palantir itself has any form of temporary access to the data from the companies they consult and whether or not they are allowed to analyse it themselves, even if not store it.
If, yes then we are looking at government enabled Cambridge analytica (in many fields not just politics though) all over again. If they can for instance analyse the data from NHS, insurance companies will be drooling millions over that analysis so that they can maximise their profits by getting a very precise understanding of healthcare need trends.
seems like you dodged a bullet?