SPOILER ALERT: This post contains details from Episode 6 of “Margo’s Got Money Troubles,” now streaming on Apple TV . Margo’s got an OnlyFans account — and that was always the plan. While the titular character Margo ( Elle Fanning ) on the David E. Kelley-created dramedy “Margo’s Got Money Troubles” started an OnlyFans once she began running out of options to make money as a single mother, her creator went about the process in reverse. Rufi Thorpe , who wrote the 2024 novel of the same name that the Apple TV show is adapted from, tells Variety that she “started with the idea of wanting to write about a mother who was a sex worker.” Thorpe says that she felt drawn to exploring the stigma around sex work and motherhood, both which have haunted Margo throughout the season coming to a head in Episode 6, when her real-life identity is doxxed online.…