With respect to artists supposedly submitting “wrong” lyrics - I suspect that it’s down to the fact that they wrote them so they can sing (and often do sing) whatever lyrics they like to a song and are not as pedantic in singing the “right” words as someone who doesn’t own it.

I can think of several singer/songwriters who have changed the words to a song over the years; some because they’ve changed their mind, some because they’ve thought of an improvement.

It must wearing to sing the same old song night after night, year after year so why shouldn’t songs evolve? I remember asking the writer of probably the best known contemporary folk song ever in the UK if he ever got sick of singing it. Yes, he said, but for half the audience it’s probably the only song of mine that they know. I often start with it so they’re not sitting waiting for me to sing it and then they can listen to the stuff I want to sing.