Is Slipknot's clean self titled album really clean?

Slipknot's self-titled debut album, released in 1999, is often described as "clean" in the sense that it features a polished production quality compared to some of their later, more raw and aggressive works. However, the album still maintains the band's signature intensity and heaviness, blending nu-metal and aggressive metal elements. The term "clean" may refer more to its production rather than a lack of lyrical or thematic intensity, as the songs still delve into dark and complex themes. Overall, while it may sound polished, it retains the chaotic energy that Slipknot is known for.