Thing is - even Ken Ham, On The Rocks, whoever - no one believed 100% of the Bible is literally true. They don't even believe 100% of Genesis is literally true. They, like everyone use, use experience and reason to decide what parts are literal and what parts are figurative. When the Bible said Joshua told the sun to stand still, and it did - did the sun literally stand still? Pretty sure they would say no. Maybe they'd say the earth stood still (although I can't even imagine the implications of that) - but the Bible does not say the earth stood still - it says the sun did. Not literal.
The problem is, they have arbitrarily decided what they want to interpret literally, and then bend science and reason to accommodate that. They're not trying to interpret the Bible with an open mind, looks for the message it is trying to say, they have decided what they think it is saying, and everything else must fit that.