Definitely worth watching. I'm often critical of singers like Beyonce and Shakira, especially their dance moves while claiming to be fighting for women's rights/liberation, and the speaker in this video says pretty much much of what I'd say. Only, this one is a specific case of the song "Run the World (Girls)." If you haven't watched or heard the song yet, do so so you see what this girl is criticizing and why. But other than that, the song isn't worth a watch or a listen at all -- like most of Beyonce's songs.
Sure, Beyonce and other singers don't always write their own lyrics (it is, however, more common for singers to write their own lyrics in the west than it is in the east), but they do represent the "most important" part of the song: they play them; they perform them; they sing them! Their roles are thus more prominent than the roles of, say, the musicians, the music/song directors, and everyone else who has a role, minor or major, in completing the song.