TTT : "Would someone older reasonably be expected to be familiar with the whole of it?"
I'm mid 50s. Don't remember hearing a second verse, to be frank, and if it was a version from 1932, just how old would one need to be for that version to be familiar, word for word?
Seems odd that from time to time, on BBC R4 Extra, there are comments about "views held at the time" when playing material from the 50s 60s 70s, as a warning that it may break current PC expectations, yet they can jump on a guy for what was likely to be a genuine mistake - I for one would not expect him to have chosen it if he had known, nor chosen it if he wanted to test the boundaries, but an oversight.
Yes, his comment about walking a tightrope might seem unapologetic, but so many who are "in the public eye" can say something which will cause offence, and not realise until too late.