[4] The song was co-written by Lali, Galán, BB Asul, Juan Giménez Kuj, Mauro De Tommaso and Don Barreto, and produced by the latter two.

The pop rock track and its accompanying music video feature pointed references to Lali's feud with current president of Argentina, Javier Milei, emphasizing his dismissive remarks about her.

[5] After Javier Milei, a far-right candidate, won the 2023 Argentine primary elections, Lali tweeted her disapproval, calling the outcome "dangerous" and "sad.

[8][9][10] Milei's political agenda included proposals to repeal abortion rights and ban comprehensive sex education, among other social conservatism policies.

[23] On the morning of 24 September 2024, a Spotify ad billboard featuring Lali's face appeared at the intersection of Coronel Niceto Vega Avenue and Justiano Carranza Street in Palermo, Buenos Aires.

The next morning, the billboard was found vandalized with graffiti covering Lali's face, including devil horns, a mustache, and a dollar sign.

[3][4] Its "simple and very mischievous" lyrics[21] dissect misinformation culture, providing a sharp commentary on contemporary society while retaining Lali's characteristic humor.

[25] Romina Navarro from Global Voices said that the lyrics "could easily be about any fan who becomes absurdly obsessed with their favorite star, but the images and the context of the confrontation between Milei and [Lali] Espósito make the reference clear".

[21] Unlike her previous album, Lali (2023), which was primarily a pop record created with Galán and Mauro De Tommaso, she chose to broaden her musical horizons and songwriting team for this new era.

[25] In a positive review, Filo News praised the song, stating that "with this new track, [Lali] reinvents herself on the musical horizon, pushing the boundaries of her own sound".

[29] Irina Avilés Millán from Los 40 highlighted the aesthetics and sound of the single, adding that "the song has a rock edge that perfectly aligns with the message the protagonist aims to convey".

[30] Humphrey Inzillo from the Argentine edition of Rolling Stone remarked that the song "impresses with its rock sound, referencing the alternative vibes of the nineties while retaining its pop essence".

[31] Meanwhile, Noelia Torres of Tiempo Argentino wrote: "In true Taylor Swift style, the national pop star has kicked off her 'Scandal Era'".

[34] Radidja Cieslak from the French newspaper Libération lauded the song, stating that "the melody is frenetic, the lyrics corrosive, akin to a musical raid"; she also compared it to Mariah Carey's "Obsessed", which responded to rapper Eminem's sexist accusations.

One of the more controversial candidates, a man in a leather jacket, tears apart a sign reading "Fan #38,900" while yelling at Lali, who is casually eating a hotdog and eventually falls asleep.

[15][25] Moreover, one of the character was widely interpreted as a portrayal of the president: a middle-aged man sporting sideburns and a leather jacket, "bearing a striking resemblance to Milei", who appears yelling angrily at Lali.

[40][43] During his time as president, his actions blurred the lines between his duties and artistic ambitions; he organized a concert at Luna Park Arena and starred in a docuseries about his rise to power.

Protesters demanded more funding for national public education, better salaries for university staff, and opposed Milei's potential veto of the bill.

[49][50] The large gathering in front of the National Congress concluded with the song "Fanático," played after the final speech by the Argentine University Federation (FUA), serving as a musical critique of Milei's government.

[53][52][54] In addition, other groups of students changed the song's lyrics to directly address Milei and minister of security Patricia Bullrich, creating a protest chant.

[55] On 23 October 2024, students from the National University of the Arts (UNA) also used the song in their protest against government cuts to education funding, staging a flash mob at the Once railway station, a major terminal for the Sarmiento Line in the Balvanera neighborhood of Buenos Aires.

Bottecelli argued that, although the song is not traditionally political—unlike tracks such as "Se Viene" by Bersuit Vergarabat or "El Mono Relojero" by Kapanga, which he also referenced—it had a significant impact on the political imagination of young people and could serve as a catalyst for opposition to Javier Milei's government.

He also pointed out that the song's influence was evident during the federal university march on 2 October 2024 in Buenos Aires, where hundreds of young people sang it as a "protest anthem".

[63] Meanwhile, Lali faced plagiarism accusations from supporters of the Argentine president, who claimed her work resembled Pink's "So What", released in 2008 as part of the album Funhouse.

[66] On 17 November 2024, Cristina Fernández de Kirchner, former president of Argentina and leader of the opposition to Milei's government, entered the stage to the song "Fanático" during a political event in Santiago del Estero celebrating Peronist Militancy Day.