In recent years, awards shows have taken somewhat incoherent positions on controversial, problematic figures. The country star Morgan Wallen, for instance, remains extremely popular after he was caught on video screaming a racial slur outside his house late one night. Last year, Wallen got prominent nominations at the CMA Awards and the American Music Awards, but he was banned from attending both ceremonies. The Billboard Music Awards are doing things differently. When the show goes down this weekend, Morgan Wallen will perform. So will Travis Scott. Scott will give one of his first performances since last year’s Astroworld Festival, where hundreds of people were injured and 10 were killed in a crowd crush.