Postmodernism is interested not so much in what is true, in what should be done, but rather in questioning everything, in picking things apart, deconstructing them, to make us think again, to make us less sure, to make life harder for those who would control or manipulate others: the politicians, the media moguls, the scientists and the medical professionals.
This is why it is a negative philosophy...it can only destroy, not construct, but once it destroys, something must be erected in that place - metamodernism.