A
I have done some ferry work but never in singles but have friends who do.
They are a lot braver than I am.
One was flying a Cessna single over the north Atlantic in IMC! He had a problem with fuel transfer from the ferry tank and in IMC spiralled down to break cloud some 400 feet ABSL.
He was extremely lucky in the fact that right below him was the only fishing boat in 100 miles. He survived the landing although told me the impact was much more severe than he expected and he had an immersion suit.
the fishing boat picked him up and he spent two weeks working his way on the fishing boat before being returned.
As has been said before the aircraft does not know its over water only the pilot does.
what I do not like in that article is how they discount some statistics and accept others to push a point that does not mean I do not agree with the bones of what they are saying.
pace