I saw that too. I love the conclusion that some engineering report (not produced) shows they were of 19th century origin, or that people were certain that the plates referred to were in fact those translated by Smith. You should not become an investigative reporter.
You sound like Thomas:
John 20:24-27
24. Now Thomas (called Didymus), one of the Twelve, was not with the disciples when Jesus came.
25. So the other disciples told him, “We have seen the Lord!” But he said to them, “Unless I see the nail marks in his hands and put my finger where the nails were, and put my hand into his side, I will not believe it.”
26. A week later his disciples were in the house again, and Thomas was with them. Though the doors were locked, Jesus came and stood among them and said, “Peace be with you!”
27. Then he said to Thomas, “Put your finger here; see my hands. Reach out your hand and put it into my side. Stop doubting and believe.”