I don't know what the Lightroom* skillz of the astronauts are, but I would not be surprised if they were shooting RAW+JPEG and only processed the JPGs in Lightroom. They probably had presets to export to smaller images that was created months ago and loaded onto their PCDs. I'd imagine 4 humans in a tincan have more things to do than to be developing RAW images by digging out the details in the shadows, push the exposure and pull back the highlights, and then apply all of those settings to each sequence of images. They'll let the folks on the ground do that.

* The exif data has Adobe Lightroom Classic (Windows) metadata in it.