Let's face it. There aren't enough good song titles to go round. Trad folk collectors got around the problem by just quoting from the first line of the verse, which often didn't do the song justice as a title.
Even that didn't help where two songs start with essentially the same line.

Monty Python highlighted the problem in their court scene containing the song "Anything Goes".

On occasion there have been (pop) chart releases with the same title at the same time. Bob Dylan had "Sarah" out at the same time as Fleetwood Mac and Thin Lizzy charted with two different songs of the same title.
Huey Lewis released The Power of Love at the same time Jennifer Rush was singing a different song, same title,and neither that far from a third by Frankie Goes to Hollywood.

It is not a new phenomenon, and well respected folkies are not averse to re-using a good title - Bringing in the Sheaves

Quack!
GtD.