I have to admit, I've not yet listened to the CP UD stories; I do plan to, but I've not had a chance yet. So, this is from a position of complete ignorance:
I'm sure the kids producing the podcast comfortably exceed every reasonable expectation that could be placed on children of their age, but that doesn't mean that they reach an acceptable standard.
As an egregious example, if my -almost-two-year-old daughter managed to press record and then fart into the microphone, that would certainly exceed my expectations of her ability to create a podcast. I would not, however, expect that to be considered sufficient grounds for anyone to actually listen to it.
For the record, I don't mean to draw any parallel with the production qualities of CP, other than that listeners have a right to set their own personal standard, and if that standard cannot reasonably be met by a particular production team, saying that they "exceed expectations" is a meaningless defence.