Not All Is Peaceful in Muppetland

https://www.cinemablend.com/streaming-news/ahead-of-muppets-creator-jim-henson-disney-documentary-former-kermit-the-frog-actor-disappointed

With the release of Jim Henson Idea Man, one interviewee was left out to dry despite the footage in the film being filmed by him and not being asked to speak but it might be down to this. 

https://www.rollingstone.com/culture/culture-news/kermit-the-frog-actor-calls-disney-firing-a-betrayal-199686/amp/