Does this include all the Warriors of Light from the whole franchise? 'cuz there are plenty of unambiguously good Warriors of Light... like the Light Warriors from I... and the term kind of fell out of favor after V... and I wouldn't put much stock in commentary from a mobile spin-off game...

To directly answer the question, the XIV Warrior of Light develops some psychological issues which are covered in the DRK 30-50 and 60-70 questlines, but are otherwise of sound mind. Their resilience is phenomenal, to the point Fordola questions how they can endure everything they have.