I only have their single sample in the blog post to go by, but the original source frame also looks just like RGB noise? And the recreation looks really close i

I only have their single sample in the blog post to go by, but the original source frame also looks just like RGB noise? And the recreation looks really close if I swap between them. Looks fine to me. So as long they're analyzing the style of grain in the source properly, which the technical part of the post mentions they do...