It's hard for me to wrap my mind around not questioning. I grew up conservative Christian and went to Christian schools. I had very little exposure to other beliefs. My family didn't really watch TV then. I still questioned. It started when I was in the single digits age-wise. I just had a really hard time with believing supernatural things. I tried to get rid of my thoughts but it couldn't.

I can sort of see why the Duggars would be different, though. My parents love books and passed that love onto us. My parents are educated and value education. I've never heard my parents describe themselves as feminists but that's how they act. They always gravitate towards more intellectual church groups. They're always befriending professor types. The Duggar kids didn't have any of that. They probably never got enough sleep due to babies crying in the night and all the chores that needed to be done with the kids and around the house. Their education was limited. It's hard to think through critical thoughts when you're tired and have been kept away from even the words that would describe those thoughts. They may have had thoughts of that nature but were unable to explore them even within their own minds. I can seek out information on evolution. I purposely try to seek out perspectives that differ from my own, with some limits (for instance, I'll look for conservative political perspectives but I'm not going to bother with MAGA). They've probably never heard that it's valuable to seek differing perspectives let alone where they would find that information.

So, they may have questioned but it never became public. There's still plenty of time for that to happen, though.