Now, instead of 3 tasty lies to choose from, you're going to have 100 to choose from. Pick your favorite flavor!
And, the more flavors of lies there are (and the more they are able to manufacture "evidence" to support the lies), the more effort it takes to figure out what's actually true, and the more people give up. That's the "significantly harder" part - if people have given up, they won't buy a lie, but they won't buy the truth either.
In C. S. Lewis's The Last Battle, Aslan says of some dwarves, "They are so afraid of being taken in, that they cannot be taken out." (Quoted from memory, may not be word-for-word.) If people are so afraid of being suckered by a lie that they can't be convinced of the truth either, then those people are at "post truth" in a very real sense.
So we're left with either confirmation bias driving you to a comfortable lie, refusing to believe anything, or a huge and increasing amount of work to sort out what's actually true. The path of virtue grows harder...
