I have wide angle lenses for use with 35mm/digital cameras and they have their uses, primarily inside buildings or tight venues. As you can see in the video you posted, they do distort things, especially objects with straight lines like buildings. Sometimes the distortion is acceptable and sometimes not. Wide angle can also be useful in landscape and shooting night sky shots.
There isn't really anything I foresee needing a wide angle for in my drone use. Usually it's more an issue of zooming in rather than out.