The fundamental flaw in the author's argument for using SuperMemo is that there is a ton of value in manually creating the decks yourself. When you write out an item in pencil on paper, then copy it to Anki and create a card, you're creating a memory and physical association with the creation of that card. When you just cloze pre-made selections of reading material, you're skipping this entire process.
This is the same reason that downloading pre-made decks from Anki's website doesn't really work.
This is the same reason that downloading pre-made decks from Anki's website doesn't really work.