All of these accounts "subscribed" to Twitter Blue at the same time, it's obviously a change made by Twitter themselves. I doubt anyone even has custody of Bour

All of these accounts "subscribed" to Twitter Blue at the same time, it's obviously a change made by Twitter themselves. I doubt anyone even has custody of Bourdain or Norm Macdonald's accounts given their activity abruptly ends at the time of their deaths, accounts managed by a third party would usually post some kind of farewell message.