He didn't need to read the summary. He already had access to their testing methods and results coming from his suit. Reading a summary is pointless when you plan to investigate yourself, which all investors do as part of proper diligence. Lots of investors don't bother with summaries.
People are missing the juiciest parts of the story. The day after it looked like he was going to buy, millions of followers appeared in the lists of conservatives and millions disappeared in the lists of leftists, often accounting for between 20-50% change in followers. Explaining that to the SEC is like saying "we knew it was all lies but it's our policy to lie to everyone and they know." No, they did not know. Now they know.
No matter what happens with Elon, this is all win for freedom. I left Twitter years ago because it is such a cyber-cesspool of delusion and fraud. Now it has a chance to get fixed, because the SEC is watching. That is more terrifying than the FBI, because the SEC still has some integrity, and they like putting people in prison.