Some airlines have stopped offering customer service through Twitter because of the changes. Transit authorities and public health agencies paused auto-posting safety alerts until Twitter backed down on plans to make them pay the higher API fees. More confusion could be coming. Musk has said he will purge inactive accounts, potentially allowing the takeover of user names of dead celebrities.

Working with celebrities or other high-profile users isn’t exactly outside Yaccarino’s expertise. She has appeared on stage alongside TV stars and…