I don't know where you live, but my anecdata from being homeschooled starting ~20 years ago in the Bay Area contradicts this. I was part of a group of more than 50 homeschooled children of various ages. Our parents all had their own reasons for homeschooling us, but to my knowledge, none of them did it because they thought the public schools were too secular and teaching "sinful" science.
We were aware of families homeschooling for religious reasons, but not in the Bay Area.
Absolutely, all politics is local and the plural of anecdote isn’t data. I only homeschooled for a single year. I fully expect the communities to vary by region.
To be fair the topic of evolution only came up because the arborist made an off hand comment about how a particular tree had evolved from a tree that is native to warmer climates to survive in our area and it caused a bit of a stir with the parents. I think the park service got some sternly worded letters afterward.
We were aware of families homeschooling for religious reasons, but not in the Bay Area.