Was this a new definition of funny that I'm unaware of? I tried two episodes before hitting 'delete' on series record. 
Then I dug out my Acorn Antiques DVD and sat there with tears rolling down my face 
Festival of Funny: Shorts
I take your point. They seem to elaborate around a single joke, so if you don't get the joke they're rubbish. Didn't like Mondeo but Mum of the year was funny. But even then it felt like a waist of almost 2 minutes for one joke. It feels like they're showcasing their acting rather than comic ability, but it also feels more current.