The real problem is that the modern Democratic Party increasingly aligns with postmodernism, which is inherently anti-science (Postmodernism challenges the objectivity and universality of scientific knowledge, framing it as a social construct shaped by culture, power, and historical context, rather than an evidence-based pursuit of truth).
But postmodernism, as a philosophical and larger historical/analytical approach, is not some evil boogieman. Lots of things have been done based on purported science knowledge that was, with historical context and with a proper critical eye, complete nonsense at best, and evil at worst. It was quite easy to make phrenology look like science. Postmodernism studies how it is possible to make something look like science. It's a complicated topic with consequences for the framing and development of scientific knowledge. There's no reason to discredit scientific endeavor in totality because of that though, and, to be honest, those people are far more fringe in academia, for instance, than people realize. And just as well, properly framed, there is no reason to wholesale discredit the critiques made by postmodernism of the uses and abuses of scientific knowledge by scientific institutions, governments, individuals, and the ways that arose out of culture and historical context.