Complaining that the accents were not correct is a bit pointless when you read in ORAC's link
Among the men recorded was John Hickman, a musician from Bletchingdon, north of Oxford, who experts say has an Oxfordshire accent completely different from that of today
and
'Regional accents were much stronger.
'This was a period when you could tell people from one village to another, it wasn't just county to county.'