The album's music and vocals have been compared to the band Incubus, who originated from the same suburban area of Southern California. In a December 2001 MTV interview, guitarist Dan Estrin commented, "we have a lot of people that bash us because they think we sound just like Incubus", adding that "a lot of people don't understand that we're all the same age, we grew up in the same neighborhood and we're influenced by the same bands. Both our singers were heavily influenced by Mike Patton from Faith No More."[9]
Despite garnering heavy comparisons to Incubus, it was met with some positive reviews upon release, with AllMusic's Michael Gallucci awarding it four out of five stars.[5] Joshua T. Cohen of The Pitt News wrote in 2002 that, "their sound and especially their vocals bear a striking similarity to Incubus’ later work", adding that "many categorize Hoobastank as mere 'rip-offs' of Incubus because of these similarities. But for those addicted to the melodic rock sounds of Southern Cali, Hoobastank serves as a great fix."[10]
In a 2002 review of an Incubus and Hoobastank concert, MTV's Leah Greenblatt labelled the sound of the two bands as "sensitive hunk rock [for] teenage girls", and described Hoobastank as having "crunchy, Faith No More-esque riffage."[11] In his book The Encyclopedia of Popular Music, Colin Larkin categorized the band's sound as "melodic metal", also comparing it to Incubus and Faith No More.[12] A negative review came from Rolling Stone's Steve Knopper in November 2001. He critiqued their lack of originality, commenting that "we've heard all Dan Estrin's big-metal guitar riffs before [and] singer Doug Robb has the moany high pitch that's going around metal these days."[7] David Browne of Entertainment Weekly had a similarly mixed review, remarking that the album's lyrical themes "will sound familiar to anyone who’s spent time cranking metal records."[6]
Louder Sound praised the album in 2021, commenting that the band "had the ability to write high-energy, catchy-as-the-plague bangers."[13]