There's two ways to play being the only human in a Muppet Movie

Michael Caine: this is the most important act of thespianism in human history

Tim Curry: you try to out Muppet the muppets

Every single thing described here — criticism of politicians, boycotts, protests, requests for updated language — is a normal tactic for social change.

These accusations could have been levied (and were!) against suffragettes, the Civil Rights movement, gay marriage campaigners, you name it.

I think this is the main thing.