I don’t think the muppets are a truly DEAD ip and ever will be. Muppets 2011 worked, and mayhem people liked, maybe not a SMASH ULTRA hit, but still good reception, so the muppets can work again. I don’t think that they’ll ever truly reach the heights they did in the 80s again, but maybe that’s ok. People
Still KNOW who the muppets are, and Jim Henson is still beloved. I think they are gonna continue on as more of a smaller “cult” ip but still knowledgeable. Maybe not as a Mickey Mouse level household name, but the notion of Kermit going into a rocky and bullwinkle level of “fallen from public consciousness” doesn’t seem realistic. Especially under Disney. They’ll always use nostalgia, that’s what they are built on. Part of the reason why I think Disney is a good environment for Kermit and company.