He seems to be presenting a false dichotomy:
Why would God run the risk of nature acting out and having human beings and other creatures harmed or killed? Because the alternative meant that everything in nature, including human life, would be irreversibly programmed and would therefore run, colorless and unchanging, into infinitude. Imagine a world where every solitary event is the same every day. Imagine humankind where everyone is a computer, powerless to make any decision that had not already been programmed. That was the alternative.
If those are the only two possible choices, which of those two is heaven? Or is heaven a third possible choice?
So Heiser seems to have a false dichotomy. I think there are more alternatives than just the two Heiser presents.