I'm going to make devil's advocate against the drone explanation because it has many flaws at the moment .
First, the examples of drone that people posted here and on Reddit do not look anything like the Glowin UFO. We can clearly hear their sound, and if not they are far enough that they only show a dim light. That thing is very bright, even from far away, and it does not look like the white cold light from LEDs, more like a warm incandescent sort of light.
Second, it's dead silent in the videos. Being French I understand what is said in the videos, and people seem genuinely freaked out, and in all videos in which they talk they comment about it making no sound. This is a big point that cannot be ignored. This woman who appeared on the main national TV outlet has no interest in describing what she describes. She is a horse breeder in a small village where people will take you for a nutjob if you report things like that. It's very difficult to imagine all these people on the videos are part of the hoax. And again, the videos confirm what they say anyway, we don't hear a drone sound in the videos.
Let's consider it's a hoax that does not involve the witnesses. The hoaxers must fly this thing above people in different areas, hoping they don't hear any engine sound to discard it as a drone, and that they take a video of it to report it. In the case of the farm report, it's in the countryside, in the middle of fields. They had to go there at night, fly their thing, hope for the farmer to hear it and come to check it out, take a video out of it, and report. Who has no life to the point of making plans like that ? It makes no sense.
This thing being an alien probe or craft does not make more sense of course (why would they show up in such a dramatic setting?). But at least understand why many consider this case unsolved. There is a reason why this UFO is all over the place on Reddit, and reported in many medias in France.
EDIT: the horse breeder didn't hear it by the way, she heard her horses being agitated and came to check on them