I rarely agree with this viewer. She has a bad habit of going off on tangents and missing the whole point of the episode. Kevin isn't evil. In a moment of overwhelming grief and guilt he lashed out and being a superbeing that act was extreme. But he had just lost the one woman he had spent a lifetime with. I did agree with Picard that sometimes there can be nothing worse they could have done to Kevin than him living(presumably forever given he is a superbeing) with his own guilt of not helping Rishon and annihilating an entire species. Afterall this person isn't a cold-blooded monster with no conscience.