Actually it's very common on Irish TV & Radio to year the "F" word and other expletives regularly used in various guises. That's where this show originated and while understandably many may find it offensive, it's quite funny in my opinion but there again my wife may disagree!
"But has script writers lost the art of making us laugh without these expletives"
I don't think so. For me a joke is not necessarily funny because it has swearing in it. Conversly it is not necessarily NOT funny because it has swearing in it.
A joke/comedy is either funny to an individual or not. We don't all laugh at the same things. I'd be surprised if there are not some people who having been alerted to the swearing content of this (and other) programmes will have already decided that it's not for them (fair enough), and will proclaim that it's not funny without watching it.
'The Inbetweeners' is riddled with juvenile and peurile swearing and I find it hilarious. Chubby Brown effing and blinding on stage for 2 hours leaves me cold.
Switching over channels I landed on this one for the last 5 minutes and thought it was fairly funny.But having not seen it all I cannot make any comments on it. But thought it was funny enough maybe to have a look at the next episode. I myself do not like bad language on TV but did not find the language on it offensive. I think it may get very popular but only time will tell. Put it this way it was better than most of the other channels that I was scrolling through.