Chuks,
you said :
40 (!) different medical professionals, all found it a good idea to keep quiet about that, so that none of them contacted Lufthansa or the LBA
Yes, but from your profile you say you live in Germany, then you might know about the regulatory changes passed today regarding Pilots mental health supervision , as a direct aftermath of this accident that are making headiness news this evening.
But that does not alter the medical secrecy and transfer of medical data to third parties, which is unlawful in Germany and an MD who does that will be prosecuted and will most probably end up in court.
These laws dates back from 1946-47 , mostly because MDs under the 3rd Reich were forced to hand over medical data of their patients to the police , and those proved to have disabilities (genetic or mental ) were send to the concentrations camps to be eliminated. Changing old rules like this one today is still a big issue in Germany. Maybe this case will unlock the situation, but it will take some more years I fear.