There seems to be a recent trend of people "discovering" the old Muppet commercials for Wilkins coffee and such. People are shocked at the violence in them. Though of the videos I have seen of people watching them, they seem to also find them hilarious. This is why it is hard to be an adult Muppet fan. People who think they are fans only know the Muppets as "for kids" as opposed to family friendly, yet still pretty edgy, material. It is a big part of why The Muppets 2015 was poorly received at first.
Oddly enough, the 2015 series does not have a disclaimer. I wonder if it can be viewed on a kids account though.