Sober lark, not bashing Ryan at all, but trying to get a point across, that if you feel that you cannot be honest with your employer about your health, state of mind because a company policy makes you feel you cannot, then that is a risk.
The Italian authorities in the incident I quoted pointed out the driver in question, kept in secret from employer the death of his child for fear of losing his job.
How is that correct? Is this man a monster also? Again coming back to a point that is you do not feel you can be open about your mental state of mind, you can lose the plot and awful events such as these can occur. Maybe not deliberate, but a lower performance that will lead to errors or unstable approaches as in Italy.
Two people on flt deck or not, with one blow you can knock someone out, locked door, no locked door, 2 people or not. If someone's state of mind has gone of kilter to that degree who knows what they will do, look at all the mass shootings in usa from mentally disjointed people with access to weapons. A mentally disjointed pilot has a weapon in the shape of a control column.