Jim finally gave in to the press and others calling the Kermit character a "frog-like" or worse "lizard", and cast him "The Frog Prince" special. He often gave in to things like this over time, when they just wouldn't die, like creating "reperesentational" puppets instead of just abstract "things". Many people insisted Jim named Kermit after Kermit Love, when in reality he was named after a high-school friend. After years of correcting people, he told Mr. Love "Oh just say yes, it's easier."
Even at the end, he even had to give in to whatever pressure he was getting and developed an on camera realtionship with Kermit duirng "The Jim Henson Hour".