""South Australia" may have been written by Lloyd as well."
Doubt it - though he may have been an infant prodigy - it was collected in the 1920s
As has been pointed out, as far as 'sloppy scholarship' and misinformation is concerned, these people were performers; it was only when they made unsubstantiated and inaccurate scholastic claims of the songs they introduced "this is typical of the 18th English repertoire" was one of Bert's favourite types of statement, when we now know he got many of his songs from Canadian or Irish collections, for instance.
MacColl's introductions tended to be leads in to the appreciation of the songs as performed pieces rather than the passing on of scholarly information - we have enough recorded live performances of his to know this to be a fact (not to say he couldn't bullshit with the best of them).
"I doubt that Hugill was guilty of either "hypocrisy" or "bullshit."
The half dozen times I saw Hugill perform I came away with the impression of somebody desperate to show he knew more than anybody else on the planet about sea songs - he straddled the revival and the tradition like the feller who used to stand outside Rhodes Harbour - a performer to a T.
Jim Carroll.