all traditional songs were written by somebody,they have often been added to by anonymous improvers[Over a period of time],yet no one calls them fakes,if a song is well written and has a good melody,and sounds traditional,I will sing it,if it was written by Ewan Maccollor any other traditional style songwriter,or is anon,or is anon altered by Lloyd,that will not stop me from singing it.
the tradition is an ongoing process,people have always altered old songs,I am sure Bert LLoyd wanted people primarily to sing the songs,he realised that the tradition was not something to be frozen,if he did what has been alleged[and this is yet to be proven[as far as I am concerned],how is that any different from all the other alterations to traditional songs[such as the addition of the Parrot in the outlandish Knight],or the Bob Roberts version of Gamekeepers lie Sleeping.
songs and stories will always be altered either accidentally or deliberately,we as singers, have the luxury to choose which version we wish to sing.