It’s ultimately spiritual.
Our spiritual framework shapes how we are going to see everything else.
I would expect to see that most or maybe even all people who deeply believe in Christ (I do) would see the Shroud and its enigmatic image as “very possibly genuine.”
Those who are utterly wrapped up in themselves (the lie of the Garden of Eden that we could be as gods, which is actually achieved by embracing the SERPENT in faith) are going to be scoffing at it till the end of time.
If in between (weak believer) you’ll waffle. All I can say is an emphatic maybe with a high possibility, I would not be in the least surprised if it were the real McCoy. The acid test as I see it is: is the Lord glorified or is something else glorified. As best as can be seen, the answer is yes the Lord is glorified.
Anyhow, what Jesus *DID* for us is the most important thing. Because of what Jesus did, it is possible to go to the Lord for instant forgiveness for any sin, and to seek His blessing as you work to exalt Him. That’s what sells me on Jesus. The shroud is a wonderful artifact, but it’s like the icing on the cake. That’s not why I believe. “Blessed are those who have not seen and yet believe.”
You often post comments about religion that I do not agree with, but, for this one, I offer a great big “ditto”!