This article has me a bit concerned. Apparently some of the old guard in the Muppets troupe object to someone of the decisions made for this movie.
I read that article about a week ago, and honestly, it really feels like the Old Guard (for lack of a better term) is getting all "these are not
my Muppets, so get off my lawn."
One Muppet "insider" is quoted as complaining about the "fart shoes" joke, as though Fozzie has never used whoopee cushions, ever. The entire point of that gag is how terrible Fozzie is at making jokes and that fart jokes are awful and it is an awful joke. And that he's so proud of it is
exactly why it is funny. Like Fozzie doesn't have an entire room
full of whoopee cushions, joy buzzers, and chattering teeth somewhere within the Muppet Theatre.
Frank Oz is the only one of the "Muppet old guard" quoted in the article itself who is named outright, and he apparently turned down working on the film long before the script was looked over and revised with suggestions from other old Muppet hands, as well as noted genius John Lasseter. (Oz also came up with the
Cheapest Muppet Movie Ever Made concept alongside Henson and Juhl, which is almost certainly the other script referred to in the article, so there's always the possibility that there might also be a bit of resentment there that Segel's idea was chosen over Oz's.)