Also in the article - But Savitt said that determining the percentage of spam accounts is not necessary in this case, since “nothing in the merger agreement turns on that question.”
The value of Twitter is in my opinion based on real eyeballs, ergo, spam accounts falsely inflate the value of the company.
So the game is going to be around, who has to provide what, and were all the requirement for the agreement true.
I am guessing.
elon read them, read that disclaimer, and decided "I'm OK with committing to this purchase with no further research"