For many years in the Air Force my doctor was a "company" man who had a duty to report any psychological issues up the chain of command, due to the "special" ordnance we carried.
I now work for a company where all the pilots are under the care of company doctors. This situation does have grey areas , doctor patient confidentiality issues versus the "greater good".
Simply put, had either of Lubick's doctors contacted GWs about his mental state this crash could have been avoided.
The debatable point about one's right to privacy over the right of innocents being murdered by a fruit loop needs to be settled IMHO.