No they aren't but it's the smart thing to do. Next time you are in public and see someone over the age of forty ask them why the Exxon Valdez ran aground... then tell them that Captain Hazlewood wasn't "drunk at the wheel" he was in his cabin and that the USCG was not able to revoke his license for wrongdoing. I assure you they will be surprised!
Ask the same person about the Tailhook scandal and I promise you they won't talk about all millions of dollars the US Navy spent investigating its own and the millions more spent fixing the problem.... but they probably will remember the tshirts stating "WOMEN ARE PROPERTY"
If the US Navy doesn't release this information before the public starts loosing interest... then the public will just make assumptions based off the last thing they remember reading... and the U.S. Navy's reputation will suffer... along with future recruitment efforts.
The media feeds off unanswered questions... and the Navy has the information at hand to stop the big media outlets from butchering the story which (regardless of fault) is in their best interest to do.
P.S. Don't blame the internet because this B.S. predates the internet by 119 years. The book "Trust Me, I'm Lying: Confessions of a Media Manipulator" by Ryan Holiday traces the history of B.S. reporting back to a US Navy incident in Havana Harbor on the evening of 15 February 1898. Had the Navy released the facts after that incident then we would have avoided war. A century later and the Navy still hasn't learned how to deal with "new" media.
P.S.2. The only people with the patience to "wait for the full investigation to be finish before speculating" are the handful of Navy and Merchant Marine professionals who will read the final report and take action because of it. Early speculation does very little to influence these professionals. In fact early speculation by these true experts can (and does) help investigators look into problems which they'd otherwise miss.