I first heard about 'trusted voices' in Amazing Polly's video about Event 201, where they put the finishing touches on their plandemic.

Here is the WHO bragging about how they have successfully used their grip on MDs to push their fucked-up vaccine.

https://www.who.int/news-room/events/detail/2021/07/08/default-calendar/trusted-voices-who-why-and-how-to-communicate-about-covid-19-vaccines

So it is obvious that they feel it was a success and of course they now want to use it for their other hoaxes.