I'm an optimist in this area - people like Wait But Why and XKCD (eg - https://xkcd.com/thing-explainer/) - show that most complex subjects can be explained in simple language that most people with an average education can understand. (An aside: I recently wrote an article about the use of D-Wave quantum computers on Wall Street and that experience gave me a sense of how tremendously difficult it can be to simple summarize an inherently technical topic. I estimate it took about five hours of study to be able to write a couple of accurate sentences I felt comfortable with.) Whether the general public has the inclination to take the time to understand this stuff is another question entirely!