(I mean campaign people, and high profile surrogates, not all Clinton supporters.)
If Bernie had dropped out a month ago (or, frankly, if he dropped out yesterday), there would be no horse race to cover, and no "both sides" (on the Democratic side) necessitating some balance between critical pieces of Clinton and critical pieces of Sanders. So any press coverage of Clinton would be one sided and critical, elevating nonsensical stuff into front page news.
Really don't see how Sanders staying in has hurt Clinton. That might not be true forever, of course, but up until now I really don't get it.