could we pull off d-day with all the media attention we have today?

Answer 1

Never. The New York Times would've run the battle plans, complete with maps, on the front page.

Answer 2

We would have lost that war if the press were like they are today. For example, collateral damage is always a bad thing (seeing little kids die makes me cringe), but I don't recall in my history Roosevelt getting pummeled in the press for allowing German civilians to get killed like Bush does when Iraqi civilians get killed. Bush supporter or not, I think the whole affair is unfair blame-game reporting.