Thanks. Still not entirely sure it's those irregularities which cause interruptions/flickering though, and not atmospheric distortion of a "point source." Quick gpt seems to indicate it's atmospheric distortions, and those don't apply to planets for reasons you mentioned (it's larger and thus distorted, so additional distortions from atmosphere are imperceptible (just more noise on top of a wide noisy signal).

Thanks for the knowledge dump. Learned lots 🧠