My attention was drawn to a site calculating the temperature that would have been caused by the radiation if young-earth creationist claims about radioactive decay rates were true.
That would make the Earth in the era of its early stories a fiery furnace. And thus if heaven represents a restoration of Eden, then to accept young-earth creationism would mean turning it into hell, so that it resembles the lake of fire rather than a paradise. And of course, literalism has led some to conclude that heaven is hotter than hell based on other considerations.
In related news, David Macmillan, once a supporter of Ken Ham and his “museum,” explains why he has changed his mind.