Legacy
Despite its initial minor success, LP1, with the help of word of mouth, gained cult status since its release; as a result, it was frequently bootlegged, and became a major topic of discussion on Internet forums. The album is considered an important work of the emo genre that set up the foundations for later bands in the 2000s; following the decline of the genre, a new wave of artists aimed to reproduce its early sound, with American Football being an influence. Polyvinyl co-founder Matt Lundford described the album's subsequent sales figures and influence in the years following its release in a 2019 interview with Noisey as "a constant climb upwards." Lunford recalled LP1 "just kept organically being discovered by people, and then inspiring people and inspiring bands, and then being rediscovered."
AllMusic reviewer Fred Thomas gave the album four and a half stars and described it as "an anomalistic emo-jazz hybrid"; he noted the record's laid-back production compared to emo's more aggressive tone and hardcore origins. Joe Goggins of The Line of Best Fit gave the album a 9 out of 10, labeling the record as a "perfectly-pitched, emo mood piece"; he noted the typical themes of emo, citing anger, regret, disappointment and frustration. Goggins interprets the calm yet sad tone of LP1 as Kinsella experiencing these emotions but having to move on as a significant amount of time has passed since then. Philip Cosores of Paste gave the record a 9.0 out of 10, describing it as an "album that ultimately defies genre classification"; he states it "serves as what indie rock should be about, synthesizing the musical world around us, not dividing and separating."
The American Football House became a landmark for emo music fans, who often visit the house to take photos. Music journalist Sean Neumann, who documented the history of the house for Vice, noted that fans have carved markings into the sidewalk in front of the home where Strong took the original photograph. The house would later take a leading position in the band's reunion, and the interior of the house later used for the cover of their eponymous second album. Kinsella revealed that the repeated references to the house was due to the fact it was one of the few images related to the band. American Football revealed they, Polyvinyl, Chris Strong, Atiba Jefferson and Open House Contemporary had collectively purchased the house on May 5, 2023, "in an effort to preserve its place and legacy within the community that built it."
Stereogum listed "Never Meant" as one of "30 Essential Songs from the Golden Era of Emo" and "The Summer Ends" as one of "30 Essential Post-Rock Songs". NME listed the album as one of "20 Emo Albums That Have Resolutely Stood the Test of Time". Rolling Stone ranked the album at number 6 on their list of the "40 Greatest Emo Albums of All Time"; it was ranked number 5 in a similar list by Kerrang!. "Never Meant" was named the greatest emo song of all time by Vulture.
Em Casalena of American Songwriter wrote, "American Football is one of the most heartwrenching breakup albums ever written and produced… and not only in the Midwest emo genre."
Ellise Shafer of Variety conferred the title of the "ultimate Midwest emo anthem" on the album's opening track, "Never Meant". In congruence, Kerrang! called the track "one of the defining songs of the genre," and stated that the album as a whole is the one that "everyone seems to have agreed is the pinnacle of emo, despite the fact that you’d probably have to be in the band to name more than four songs from it."