In Jain Dharma, the devas are not all-knowing, all-powerful, or perfectly pure like liberated souls. They are still souls in heavenly birth with karmic limitations.

So in the story of Nilanjana, the lesson is not that the gods were morally perfect. The lesson is:

• worldly beauty is temporary
• attachment is dangerous
• ego and desire can mislead even powerful beings
• only the path of liberation is truly worthy

If a deva acts wrongly, that does not make the deva worthy by itself. In Jain understanding, devas are respected only because of their good karmic state and because they may help protect Dharma. But they are not final authorities and not free from karma.

So the answer is:

They are not worthy because they caused her death. They are worthy only in the sense that they have better heavenly karma, but they are still imperfect beings.

In Jainism, only the Tirthankars, Siddhas, and the true path of Dharma are fully worthy of ultimate reverence.