It's not so much sex hating as sex obsessed. And I don't think they believe women are icky so much as fascinatingly armed with the seductive power of naked boobies.

It's a way of asserting control over strong emotions that might otherwise become overwhelming.

It's not a coincidence that if you lift up the rock the fundie types live under, all kinds of sexual weirdness comes wriggling out. I'd guess they experience desire as an overpowering threat to their fragile sense of personal dominion and sovereignty.

It's also not a coincidence that the wackier fundies get, the more this kind of thing happens, until everyone is living in Gilead - which isn't just a repressed place, it's also a very kinky one.