This sort of thing has gone on a long time, in fact. One sometimes suspects they do it on purpose as some sort of joke. Peter Bellamy & I could think of no other explanation when we listened together 32 years ago to Radio4 Kaleidoscope's review of his ballad opera 'The Transports', which I had recently named as my Folk Record Of The Year in The Guardian. They began with a couple of verses of Martin Winsor singing Norwich Gaol; after which one of those Kaleido-voices they all had informed us that this was a track from this new album sung by one 'Peter Tawney' [for those who don't know, no such person: presumably their own amalgam of PeterBellamy & CyrilTawney?]. We just looked at one another and burst into helpless laughter — there didn't seem to be any other possible reaction to a Beeb guru who couldn't even read a bloody record-sleeve. I am constantly reminded of the sneezing child in the Duchess's song in Alice in Wonderland — I swear they only do it to annoy because they know it teases.
Sorry if this a bit drifty — but it felt relevant to all these complaints.