To be fair, the release specifies that these are views of their original programming for the past year (October 2018 - now), so I'm less surprised that older Netflix originals no longer promoted (or already watched) don't make this list.
Ahhh I missed that line- that does make it make more sense. I track PR metrics for a living and would absolutely love to dig into historical Netflix viewership stuff with the same lens.
Absolutely, the Netflix black box is fascinating. I'd be especially curious to know how they use their viewership data to inform development and production of new content.