I say "for some reason" because I can't for the life of me figure out why.
I understand the opposition to message content -- a lot of libertarians reject the notion of anthropogenic global warming and regard calls for people reduce their "carbon footprints" as so much nanny state bullshit.
In terms of presentation, however, I have to suspect that most of the individuals linked above have watched and enjoyed one or more of the following: Monty Python's Flying Circus, Monty Python and the Holy Grail, Monty Python's Life of Brian, Monty Python's The Meaning of Life, etc.
"It's only a wafer-thin mint." "It's only a flesh wound, c'mon, wot, you scared?" "We have come for your liver." "No Pressure" is 100% in the Monty Python tradition of over-the-top humor -- a bit drawn out and belabored perhaps, but what I'm seeing isn't criticism of comedic skill, it's the kind of bizarre response I'm used to seeing from politically correct lefties when a public figure uses a word that sounds suspiciously like something which might be racist even though it isn't.
Guys ... chillax and enjoy the violence inherent in the system:
Update: Hmmm, I was actually closer than I knew to the truth. Per Stephen Gordon (unfortunately in full PC overreaction mode like, it seems, everyone else), the author of the video is Richard Curtis of Black Adder fame. Not Monty Python, but very much in the immediate vicinity as such things go. Huzzah! Room for another affiliate link!