That's fair. I don't even know whether they are authentic NP notes (never read his books), but the channel is the only thing that helped me to be very close (a few days/a couple of weeks away) to complete a non-trivial learning project out of school -- first time ever in my life, how weird that sounds. I guess as long as it works it's fine.
It was made available in the end of OCTOBER in the special security preview channel.
GoS has already deployed patches to some of the vulnerabilities you'll read about in January.
All the partnering vendors have access to the same bulletins.
Multi-billion companies like Samsung or Google had access to that since AT LEAST October. They chose to release these patches late. Some will release these patches months form now. Some, perhaps never.
Not to say that some of his work is not useful though.