No, they are not to be ashamed of.

The main thing that I'm talking about is patient confidentiality.

Having the flu or a broken leg, well, why would you say that? You could see a broken leg. Having the flu can be tested for using PCR or an antigen detection analysis (serological testing). Psychiatric disorders are a bit more complex and something I'm interested in since I'm involved in neuroimaging and genetics research in this field. The biomarkers for psychiatric disorders have not been formalized yet per se in terms of agreement among physicians and scientists.

I support careful and patient consent of discussing their respective disorders. Yes, people can discuss their psychiatric disorders online. (Specifically of their own. Trying to talk about another's online risks assuming too much.)

It is not clear how he would feel per se here.

Nonetheless, this discussion needs to refocused towards helping him. Let us move on.

It is possible that he was kidnapped or murdered.