Apparently they detected the implosion so knew the sub was toast on Sunday. The wreck was exactly as expected - directly below its last known position, and probably located within minutes of getting a submersible down there (as per James Cameron).
So why was it such a big news story for so long?
Well, wasn't there a hearing about corrupt pedo president Bidens crack-head money laundering son?
Nah, that couldn't be it ... we can totally trust the US government and the media.