That's a pretty marvelous observation, and remember, he lived before we entered the information age such as we now know it. The media-bird that gets the worm these days has to have reflexes and resources sharper than his or her press badge to file the story first. If that is the case, the scramble for the scoop will inevitably relax the scruples that guarantee legitimacy of sources. Cultural shifting has altered expectations and the tempo and assumptive base of the times. The environment is characterized by shortened news cycles, story shelf life, and short attention spans.
People begin to take other than the old givens for granted.
That is essentially what makes one era different from another. And that is the way it is. But the truth will prevail . . . Even if it does get its pants on, there aren't too many people really looking for it, at least among those who are supposed to be digging for it. Perhaps then, in time, it will prevail . . .