I feel that there is too much personal ownership over things like this. I can find changes to certain things (ones I listed before) to be obnoxious, disrespectful of the original concept, or destructive to some extent, in the context that it's the fault of the writers, not the characters themselves. And usually if something's bad enough, it's something to just ignore. Like when they had that Simpsons plotline about Skinner not being Skinner, and it's just completely ignored except for one callback. Though, that show's continuity is wildly inconsistent, and they tend to make the mistake of calling back to things instead of ignoring them.
With the Muppet characters, I've noticed that Disney tends to have a virtual celebrity handle on the Muppets. If anyone remembers the TV Guide "Top 5 non-human characters" Piggy and Kermit have no mention of being puppets or Jim Henson, yet ALF's entry on the list has nothing but references to him being a Puppet. I think that's the intent of publicity here. That we know they're fictional characters, but very special fictional characters that sort of exist sort of don't. The whole "celebrities in their own right" thing that you just can't have with Spongebob or Mickey, or any cartoon for that matter. Part of the fun is the illusion and suspension of disbelief while knowing these are puppet characters. That's why so many of us are Muppet fans. The talent to make these things seem real while knowing it isn't. That's what I like about this "announcement." Taking it too seriously, however, drains all the fun out of it.
That's what I really liked seeing int The Muppets. That one line Kermit says about how Piggy does and says things that pushes Kermit away. That was a refreshing level of complex maturity in a sea of "Fat Joke/ HI-YAH!!!" that plagued the characters since the 90's. I've said it a hundred times before, but it's jarring that Kermit and Piggy seem so distant in MFS. It's due of course to bad writing and direction, but it comes off...weird. The movies usually give Kermit and Piggy a softer, more gentle relationship because that's how movies work in comparison to TV shows. So I can see where some are turned off by this announcement.
But those repetitive "Pig Joke/HI YAAAAH!!!" TV appearances weren't exactly fan favorites. And they were clearly goading Steve in that direction, even before the Disney sale...especially before that. Remember that Thanksgiving Parade appearance to announce VMX? As long as we never get that sort of thing again out of the two characters, I don't mind the direction.