Reflections On Plantinga's "Refutation" of the Logical Problem of Evil
First, Plantinga didn't do anything significant by arguing it’s logically possible God exists given suffering. Possibilities don’t count; only probabilities do. All we need to say is that it’s extremely improbable for God to exist given suffering. But that says it all!
Second, the real issue is whether or not a theistic God is probable given suffering. It's not significant to say such a God is still possible. All kinds of strange things are possible, which is an extremely low standard. Show that it's probable God exists given suffering, and that would be impressive.
Third, Plantinga did not argue with integrity when throwing up an illegitimate ad hoc hypothesis that all natural evil is caused by Satan, something Richard Swinburne pointed out. Ad hoc hypotheses are illegitimate since their sole purpose is to save a proposition from refutation. So Plantinga did not honestly answer Mackie.
If we throw out illegitimate ad hoc hypotheses then the logical problem remains. The kill or be killed law of predation still has no resolution, nor do other natural evils. For this problem must be solved with integrity for it to be solved at all.
Lastly, Dr. Kyle Johnson has argued it's impossible to have a justified belief in demons. So if it's impossible to have a justified belief in demons then Plantinga's Free Will Defense fails. But wait! There's more...