Why is the band Tenacious D greatest ever to rock?

While Tenacious D is certainly a beloved and unique rock band, it's not accurate to definitively declare that they are "the greatest ever to rock." Music preferences and opinions are highly subjective, and there is no objective measure to determine the "greatest" band. Different individuals and music critics have varying preferences, and numerous other rock bands have garnered widespread acclaim for their contributions to the genre. Some examples include The Beatles, Led Zeppelin, Rolling Stones, Pink Floyd, Queen, and many more, each with their own distinct style, influence, and impact on rock music. It's important to recognize and appreciate the diversity and contributions of various bands and artists in the world of rock music.