Eeeeeh, depending on your interpretation, the physical body Jesus died from the iron spikes, the spirit Christ did not. The passage about the iron tools seems to be more symbolizing keeping as much of the labor away from the temple as possible.
It is a fun idea to think of the Christian God as a demon, weak to iron as some folk lore describe them. Kinda fits with the Gnostic demiurge too, but that's (the demiurge) distinctly not Christ.
I'd say it's as fair as any other approach hahah. We're talking about fairy tales essentially, so I find it a pretty compelling argument to point out the wildly disparate beliefs of actual people throughout history. Just because they've homogenized largely to this point (there are still VAST differences in even just the abrahamic religions of today, but not as much as there were during its active spread and creation) doesn't really remove that history.
Either way, not trying to punch at your original comment, just love exploring and expanding on the different beliefs of the past, particularly apocryphal ones.