During a recent Foo Fighters concert in London, Dave Grohl made a remark that seemed to target Taylor Swift and her live performances. Despite not mentioning her name, Swift appeared to clap back during her own concert in the city. Grohl joked about his band's "Errors Tour" and implied that they actually perform live, unlike some artists. While some criticized Grohl's comments as misogynistic, others defended him, stating he was expressing frustration with artists who use backing vocals. Swift's Era's tour has been extremely successful, becoming the first to gross over $1 billion. Celebrities, including members of Foo Fighters, were spotted at Swift's London shows. The feud may have been fueled by Grohl's daughter facing backlash from Swift fans earlier in the year. Social media users speculated on the reason behind Grohl's apparent jab at Swift.