Kermit used to be the leader of the group--even if it took arm-waving hysteria to get them to listen to him. He isn't here.
He's a guy who can't get a show on the air without his ex, so the only way he can get back at her is by cheating on her with a younger, thinner, docile pig who panders to him and enables him. Piggy at least loved him enough to be honest with him.
In the old days, Kermit would have reined Piggy in professionally for the good of the show (because she was always at her best for him) and he would have reeled her in personally, all the while protesting his infatuation (which she didn't believe any more than we did.) The show would have been better for it, and Kermit wouldn't come across as a wimpy, whiny shadow of himself.
I was going to stay out of this, but here I am, and the thing I want most to ask Disney is this: What the heck don't you understand?
The Muppets (in which Kermit confesses that Piggy is the only one for him and always has been) is a huge success. Despite being down and out, Kermit is strong and determined, and he knows just what to say to get Piggy's goat. That only works short-term, however, and he eventually has to come face-to-face with the fact that--if he wants her and needs her--he needs to tell her. THAT makes them partners--in love, in life and in success, so there isn't any need for him to feel diminished. He's strong, she's strong, they're stronger together than they are apart.
Muppets Most Wanted, in which Kermit is a cringing apologist for the group, who truly cannot "handle" Piggy--is more of a dud. (I liked it okay, but--hey--I'm an obsessed muppet fan.) The MMW Kermit can't stand up to Piggy's ridiculous demands about the wedding, but the old Kermit could have. Where is the frog who survived a thousand wardrobe demands (a week!) and came out triumphant, and with the pig of his dreams in his show and in his arms? Where did THAT Kermit go?
EVERY time the (Disney) studio tries to make Piggy out to be nothing but a fat joke (You just had to get that fat joke in there, didn't you, Kermit? Although Piggy is right--you ARE looking a little paunchy yourself.) he just comes across as mean. And by ridiculing Piggy, whom his show "needs" to be successful, he is indirectly ridiculing the fans who can't get enough of her.
Where is the Kermit I know, who made the whole world fall in love with him while he was falling in love with Piggy?