It was so laughable he got a Nobel prize for it. That's not to say Kahneman is always right, but he is always worth listening to.
Most of us trust the Nobel Prize to be a mostly-neutral arbiter of excellence in various fields. That means it is not the worst kind of appeal to authority, but rather the best - referencing a well-known and widely trusted source.
Can you give us a reason we shouldn't trust it in the general case, since your claim extends to the general, not the specific?
Even if that were true, there is no Nobel Prize in Economics.
It's a completely different prize, given by a different institution, that was associated much later with the Noble prizes.