As Lollapalooza’s original fans grow up, attending with their offspring feels, well, perfectly fine

“Is this interview about siblings or dating or something?” The question, shouted at them by a group of passing festivalgoers, made 16-year- old Hunter Smith blush. His mother, Ellen Smith, couldn’t stop laughing. The pair had traveled from Boise for their first Lollapalooza to see Swedish pop star...