Well, because in a worst case scenario, if the pilot of that big airliner decides to do ChatGPT therapy instead of a real one and then suicides while flying, also other people feel the consequences.
https://www.nytimes.com/2025/03/18/magazine/airline-pilot-me...
https://en.m.wikipedia.org/wiki/Germanwings_Flight_9525
"The crash was deliberately caused by the first officer, Andreas Lubitz, who had previously been treated for suicidal tendencies and declared unfit to work by his doctor. Lubitz kept this information from his employer and instead reported for duty. "
Marty: Well, that's a relief.