Their description of how cloud droplets become rain droplets is completely wrong. Any casual observer could tell you that warm (e.g. completely unfrozen) clouds produce precipitation, whereas the video's description requires ice. Even if you are just considering cold clouds, the graphic implies growth via water vapor deposition could grow rain droplets, and that's false by several orders of magnitude. Collision-coalescence is absolutely required to grow droplets large enough to produce precip. They get a few other things wrong, but this is the biggest error.
appears to be a piece of crap.