It already is in a completely different category than mathematics; mathematics is a humanity while psychology is a science. Do the standards need to be improved in psychology? Almost certainly, and this rings true for most quantitative social sciences. But research should be evaluated on its own, not by field. There is still a lot of good, solid knowledge being produced through the scientific methods in these fields. We just generally lack the unifying theories we know from eg. physics, because the subject matter is so much more complicated, and the field is much younger. And in a lot of ways, the way academia works is not conductive to producing high-quality, impactful research in these fields.