Right, its standard operating procedure after these accidents for the leaders (Secy Transportation, etc.) to express sympathy, state what facts are known about the event, then carefully explain that NTSB is investigating and will provide a summary soon.
They usually have to repeat many times that everyone has to be patient for the NTSB preliminary report and later final report. They'll usually say whether the black box has been located, talk about family and retrieving victims, who is working, play 911 and ATC recordings, but most don't speculate.
The news media understands these rules and reports as best they can with the information that's available - interviews with witnesses, aviation experts, etc. It's usually enough. It has to be. NTSB has to do their job without undue influence from the government, media, airline execs, etc. Those are the rules of the game and everyone has been following them since at least the early 1960s.
Frankly, I was kind of surprised to see the CEO of American Airlines quickly declaring they weren't at fault. Maybe I'm wrong, but the CEO's don't usually make such a declarative statement so early. They may not be at fault, but there's a process, procedures to follow. Wait until NTSB gives a report.
JMO