When in India "died" wootz?

[ALEX]

Originally Posted by ariel

Good example. His wootz patterns are unsurpassable.

Ariel, what this opinion is based on?
As shown earlier in this post, some images of antique wootz were allegedly mixed in the context of modern production and associated with Dr. Zaqro Nonikashvili. I think some are too quick to attribute them as produced by the person whose name appears next to the images. To me it is unclear what these close-ups refer to: a restored original blade, a sample of true wootz from another antique blade, or indeed a newly-made blade by Dr. Zaqro Nonikashvili.
The patterns Dr. Zaqro Nonikashvili produced, at least what I saw thus far, are of Anosov-like, non-wootz type. Are there any viably convincing sample(s) of his work, besides random snaps of "some wootz", that show real modern wootz pattern produced by him?
How sure are you that the 2 yataghan blades and close-up of Kirk-narduban/ zig-zag pattern were forged by Dr. Zaqro Nonikashvili?