I saw a program where one of the scientists who claimed it was fake through the carbon dating was later convinced to study more evidence and while he wouldn’t say that the shroud is genuine, he did admit that the carbon dating was done on the patch and he documented it right before he died.
Assuming that this is true, that they did the carbon dating on a patch, I am amazed at the incompetence of the scientists.
They had a one-time opportunity to do this, and they got the sample from the wrong spot. I've seen pictures of the Shroud and it looks like it should be pretty obvious where the patches are.