Has there ever been a more brutally effective piece of social satire than the South Park episode that mocked Harry and Meghan?

Since it aired in mid-February, the Duchess of Sussex, previously a seemingly ubiquitous and unstoppable cultural phenomenon, has effectively withdrawn from public life. She’s made just one formal appearance – at an awards show, which ended in the farce of disputed paparazzi car chase claims – and has given precisely no interviews.