Not sure that is true. If there are impeachment proceedings in the House then the media will cover it wall to wall like they did during Clinton’s. They won the PR battle with Clinton because they could say “everyone lies about sex”. This time it is not about sex and entirely about national security. If they can prove that Obama deliberately left Americans to die then an impeachment proceeding would force the media to cover it and possibly could topple this president.
O’s Impeachment would be similar - while the Libya stuff would be the meat, Congress would come up with something equally lame (as they did with Clinton) to Impeach him on. And like Clinton, no Congress critter would read the documents on Libya.
While many here and elsewhere are reasonablily informed on the facts, most of the public neither know or care these days. There would be no popular outcry - with Clinton most had no clue about his dealings with the PLA.