Being that this bit of new was copied and pasted from IMDB's celebrity news section, it's most likely actual source is a British Tabloid, which are known to misconstrue, misrepresent and misquote their subjects. It's one paragraph of extrapolated conjecture based on one sentence from DeNiro, so I'd take it with a grain of salt.
That said, I'm against the idea in theory too, but there's no doubt it would be interesting.