How many other programs were studying the same subject? That's what we don't know. Insiders have reported for decades about redundant research, programs, etc.
In any case, this specific program wasn't one of the secret ones.
Regardless, much of this was known already if you would just look. The idea that Elon is discovering anything other than for himself, to say the least of being in a position to decide what to do about what is "found", is laughable. They can't even tell the difference between millions and billions of dollars, or who is vital to nuclear safety.
It's like Chesterton's fence, but where the fence turns out to be vital, where you could find out what the fence is for by just asking the farmer, and where the person tearing down the fence knows nothing about fences or farming, and happens to run an animal and wildlife control company.