When the majority uses vulgarities, how does not using vulgarity make one a muppet? I’d also consider the Muppets rather avant-garde for their time, so maybe you mean it as a complement as in Gonzo, Fozzy, or Beaker (or any other pathetic Muppet).
If you think the _words_ are the vulgar part of modern right wing ideology, I don't even know what to tell you.
That said, I am perhaps guilty of the same offence there - per the BBC America article "10 British Insults Americans Won't Understand" [1], a muppet is "someone who’s stupid, gullible and incapable of independent thought" - unfortunately the pearl clutching tends to extend to the typical four letter word I would use for such people.
