Um well that told me. Thing is that the video is simply not a properly constituted experiment. Dunking o rings in a solvent and measuring the O/D is not a proper measure. The tensile strength and resistance to a point load need to be reviewed.
That said, you are right, opinions abound. The Chain manufacturer would be the final arbiter. When I worked as an Engineer in Manufacturing (back in the day when we HAD manufacturing) we discussed this with Reynolds, at the time the worlds largest chain maker. They had a conniption when asked about kerosene et al.
That said, maybe it won't matter. If you ride a lot and your chain lasts say 10,000 km, then a regimen of a solvent and chain lube may not reduce the life much to be noticeable.