I'm a working class guy in North Dakota. Very conservative, Trumpy, and Jesusy around here. I know plenty of Trump supporters and churchgoers. I don't think any of them believe that the earth is only 10,000 years old.
The movement seems a little weaker nowadays, but goofball trends tend to come in waves. See, for example, social conservatives replaying the 80s and 90s anti-gay playbook adapted to target gender nonconformity in general and trans people in particular after a decade or so where they seemed to have given up. Majority comments on the Roe vs. Wade reversal about other progressive rulings that depended on the same case gave them new energy.