This is getting as annoying as the media’s self-congratulatory “fact-checking” genre. We’re seeing it pretty much every day now. It’s the “Trump says (fill in the blank) without offering evidence” genre.
A new media standard has been born for reporting on the statements of politicians. Starting on January 20, 2017, any time a politician says something, the media breathlessly informs us that the statement was offered without any supporting evidence, regardless of whether evidence as a) actually cited; or b) is so widely recognized that it really isn’t necessary to specifically cite it.