I would side with Chris Crawford on this one...
I have tried to explain this before and, well, I guess none of you guys read what I say or have me blocked or something - regardless, as Dolly Parton once sang, here I go again
😀 😀 😀 (the below is merely opinion and I have no science to "prove" it so take it for what it's worth... no monetary value
😀 😀 😀 )
Digital (regardless of B&W or colour) noise is far less random and is more structured/orderly than any grain within film. Film grain, regardless of ISO, tends to be more random in structure versus digital noise. Therefore, digital B&W, while just fine, will always look "different" (for lack of better wording) than film.
For example:
From the Olympus EP-2
From rebranded Superia converted to B&W
From Tri-X:
Cheers,
Dave