I’ve extracted the preview, it does not show any hot pixels:
At this point, I think it’s just a shitty sensor but I do still have a question.
Is it possible that DJI really gets rid of them for the JPEG without having a map of sorts in the metadata?
I have other images from this drone in low light. These hot pixels appear on every image on the same pixels.
You’d hope so, the preview jpeg gets the same processing as if you were shooting just jpegs and not dngs. Hot pixel detection isn’t hard at this point.
Thanks all for your help! 
I should add: we can think of hot pixels as an extreme form of noise. Any noise-reduction method will probably eliminate them. In-camera conversions to JPEG often include noise-reduction.
