Here the author illuminates his ignorance on the topic. No need to read any more.
I went to a three day seminar on the Shroud and the consensus of all the scientists there concluded the Shroud real. The carbon dating was taken from a repair done in the 13th cent. and there is no way the technology of the 13th. cent could have produced it; one example is you can’t see any image unless you’re 18ft from it whereas the closer you get to a painting the more detail you see. You see no detail whatsoever the closer you get. Another thing. The image is on the fibers rather than IN the fiber as if it was painted. There’s more.
There is an artist sketch from about 200-300 AD, if memory serves me, that contains a triangle of holes in the facsimile sketch exactly where they are in reality.
The sample tested came from a later mending of the original cloth.
Carbon 14 testing can be thrown off by exposure to fire, to which the Shroud was exposed.
The knowledge of physiology, medicine and anatomy required to generate the image was unknown to people of the Middle Ages.