It shows that brilliance in one field is insanity in another, all in one person. Unlike Einstein he believed in a personal deity, just because. It shows that a perfectly logical and consistent person is capable of superstitious beliefs divorced of all reason.
Mathematics doesn't care who discovered the proof. It's irrelevant.
Yet Einstein was wrong about Quantum Theory and a hindu-istic theorist was correct.
Pythagoras founded the religion Pythagoreanism which I doubt you adhere to, though no one quarrels with his work with squares. Kepler also followed Pythagoras in the "music of the spheres, yet his laws of planetary motion corrected centuries old errors.
Newton was deep into Alchemy, yet his work on Optics, among other things, was revolutionary.
Godel and Einstein were great friends at Princeton - despite their differences in religious views. Einstein said his "own work no longer meant much, that he came to the Institute merely…to have the privilege of walking home with Gödel". Godel eventually starved himself to death.
Science and math are strewn with wild and crazy, unstable and weirdly religious characters. They make interesting biographies. However, their accomplishments in their fields are judged on their own merits. No one would rationally decide whether science or math proof is true based on the life of the practitioner.