No, his argument is that there's no evidence for the claim that God heals.
If you believe the claim that God miraculously heals people then how would you go about demonstrating that the claim is actually true? How would you go about distinguishing between the healing that occurs by natural process and those that occur by divine intervention?
Indeed. There is no evidence that god heals because claims made by those who say ‘he healed me’ can be countered by medical evidence to the contrary. However medical science is now in the domain of repairing injuries that have never been repaired before. A face can now be transplanted (alongside underlying work) to give someone a new face after a serious deformity. This was impossible 10 years ago. When it was
impossible in science, did we ever see any out of the blue examples of it happening to confirm that god could cure it without scientific intervention? Did we ever see anyone pray to make the impossible possible through God? No.
Also, now that it
is possible, do we have people praying and it therefore happening without medical intervention as a result? No. Have we possibly had people undergo a once impossible surgery and then thank god, even though god never intervened prior to mankind learning how to repair it? Yes. So we therefore have people claiming that ‘god heals’ if it is something that mankind can already heal or that the body can spontaneously overcome (tumours, cancers etc)
If god had any abilities at all, surely examples of the impossible being cured would be occurring before medical science caught up or before study of the human body caught up? Indeed, now that we have caught up, some of the ‘miracles’ of the NT are in fact fairly banal. Even the very heart of the story; the death and resurrection of Jesus comes under scrutiny;
Can a man survive a crown of thorns? (yes)
3 days without water? (yes)
Being nailed to the cross (yes – see Meiji Japan and countless modern examples)
Being pierced in the side (yes – see contemporary skeletons of gladiators or a trip to a modern A&E award)
Being pronounced dead (yes – compare our understanding of what it means to be ‘dead’ which in itself is not 100% accurate with the understanding of the ancient world re comas, the Glasgow Scale etc)
Being in a cold tomb? (yes – ideal conditions in fact for resuscitation)
All survivable by themselves and together. If we take the NT account at it’s word (debatable if we should, but we can make the concession); what is more likely? That Jesus was not ‘dead’ however much the odds are against any many surviving all those injuries and concussion or coma…or that he was dead as we know dead to be and he defied the impossible by coming back to life through his god.