I'll risk making this a partisan issue and say the anti-intellectual and anti-science bent seems increasingly prevalent among Republicans like Mike Parson and their constituencies. One of the most shocking statistics I've seen recently is the Pew poll which shows that in the space of 2 years Republican attitudes about higher education saw a 20-point swing such that that most Republican voters now believe college is n…
I am not quite sure how much of this is anti-science as opposed to anti-college.
Colleges, not science or education in general, have been at the heart of the culture war, especially in the US, and have been viewed by many - not just right/Republicans, but centrists and moderates as well - recently as problematic when it comes to things like mandatory overreaching PC culture, title IX kangaroo courts and "rape classes", safe spaces (and racial segregation of dorms to provide such safe spaces, for example), coddling of students, college educational quality and how it correlates with college profits (including minor scandals of celeb parents bribing their kids into good schools), racial bias in admissions, speech codes, left-leaning faculty, etc, etc, etc... The list of areas that people receive as "problematic" is long.
I am not here to judge all these accusations on merit, just wanted to point out that they exist in the wider public debate (no matter the level of truth to them), and this is what may have swung the polls a lot more than a general anti-science stance.