Whether this lock being broken will have any meaningful impact on the Nouveau developers remains to be seen
Unless something changed since it was first posted it was described as the flasher binary on Windows having a built in bypass. They used that to enable flashing anything to any card. They did not reverse engineer the signature check algorithm or actually crack it.
One dude traced the binary to the point in code execution where he found the bypass. The other dude tried to do some more complicated methods of finding the bypass and then rushed to release whatever he had because the other dude found it in one sitting.
It doesn't sound to me like this would be very helpful other than trying other signed firmware on a card.
Remember when the internet used to be wall of texts. People used to write like writers do. Sentences and paragraphs that comprise a distinct idea. A collection of paragraphs that elucidate the point of view in their head.. These days the style of writing online is some kind of line-by-line disjointed train of thoughts. Something resembling a collection of 140 character social media posts. I find it more difficult to grok. Impossible at times. It's like people aren't writing for readers. They're brain dumping one liners off the top of their head.