To risk throwing myself onto the sword, I agree with the OP.
It's not about whether or not you like the Muppets; I loved them too. It's about the fact that this is a pro wrestling show. You know, pro wrestling? That thing that didn't used to be a kid's show? That thing that used to at least mask its blatant commercialism? I'll watch the episode, because I always do. I'd probably watch the show even if Hornswoggle had a title match because I've always watched it and I doubt I'll stop, now. But, bringing the Muppets (or any of the other guest hosts, for that matter,) on your wrestling program is basically saying, "Well, we give up. We can't book wrestling shows, anymore, so let's just cross brand ourselves with other guest spots from shows that have nothing to with our show." These are the things that TV shows do when they've run out of good ideas.
If anything, these stupid guest spots make me worry about the future of the WWE more than anything. More than low PPV buys, more than low ratings, because this is the result of blatant desperation to increase these things. To the WWE: We don't tune out of your show because of the lack of celebrity. We tune out because it's boring. Instead of hiring the Muppets to fill time on your show when you've run out of ideas, why don't you just put on wrestling matches? Guilt free, drama free wrestling matches. Give two or four or however many guys on your roster 10-15 minutes to just go out and wrestle, and maybe we'll pick out a few to care about. Sorry, but blatant commercialism always gets this out of me and your company just looks like it's trying way too hard to get a clue.