LMAO you are literally misquoting the video so you are right.
Yes, Danuser did indeed say:
"The Shadowlands story pulls together threads that were started in WarCraft 3 and wove their way into many of our expansions."
and he also said:
"Eternity Ends serves as a final chapter of one book in the Warcraft saga."
But those lines are not back to back. They are at drastically different parts in the videos. The second line is not referring to the first line. There is no context between those lines. They are two indepedent sentences that have nothing to do with eachother. There are two different statements, not one, like you are trying to imply by muddling the facts.