I love how people that dont like a certain product instantly label it's fans as "fanboys". I absolutely agree with the idea that everyone should be able to state their opinions, no matter how different, and I certainly respect your view. And although I dont agree with it, I'm not going to berate people who don't agree with me. Sure, I'm going to defend a product when someone says it's "poor quality", when they more than likely have no experience with other products from that company, and certainly havent seen the piece on their own.
At the end of the day, even though we're referring to it as a replica, it's just a bigger, more expensive toy. It's a toy for bigger kids, meant to be posed and displayed, as kitsch, in your home, office, what have you.
And I believe (and its just an opinion) that stuff like this does help the longevity of muppets. Products like these appeal to an entirely different audience. Just like with Master Replica's Star Wars replicas, adult fans dont necessarily want a bunch of toys laying around, but have an endearing love for the license, and the replicas are their way of supporting that. This is the same thing. Not everyone wants Muppet toys, and not everyone has the time or talent to dedicate to true puppetry. Just like a painting or statue, this is something that allows fans to say "Hey, I love Muppets", without cluttering their house with toys, or stuffed animals. And if these take off, that means yet another product line supporting the Muppet cause. And the more money coming in from products means the better chances we'll continue to see Muppet movies or Muppets on TV.