it is interesting but the placement of the oil in the chain ... do it in the cassette, where the chain goes, so you make yourself much better and more comfortably that you do it well, you can do it as in the video with the walk mode whenever Be careful that you do not have clothes that get caught in moving components. sometimes it is much better to just use a rag and remove the excess dirt without using the water.
To have an excessively clean chain requires touch above all so that the water does not enter the link ... after the water enters the oil that does not enter. Oxidizing it and turning it rigid causing even breaker defects and wearing plate and cassette
beware degreasers or the application of wd-40 ballistol, etc., if you apply them, you undo the protection of chain oil and then re-apply the oil in conditions the oils float on the surface of the water.
This cleaning device is fine, it can be improved by placing a small magnet inside that attracts the metal particles stuck to the chain by wear, etc.