It’s such a huge problem to treat mental health like “Oh you had an issue, so you are now shit-listed for life”

This is especially dangerous IMO because it means pilots who realise themselves that they are unfit to fly will simply keep on flying, while trying to hide the symptoms and avoid treatment, because they know that if they truthfully disclose what’s going on then it’s game over for them. It builds the incentive to lie directly into the system.