"Auld lang syne" is the work of one of the worlds finest and most timeless poets a and songwriters.
To suggest that the work is any sort of "Affectation", regardless of who delivers it, shows a marked lack of musical or poetic appreciation.
I prefer the original tune, but the lyrics are faultless, though some may think that they do not fit well into the "diversity" controversy.
Well that's tough shit!!