For the wisdom of this world is foolishness in God’s sight (1 Cor 3:19)
When the Spirit of truth comes, he will guide you into all the truth (John 16:13)
The mineral "pyrite" is an iron sulfide whose metallic luster and pale brass-yellow hue give it a superficial resemblance to gold ... hence the well-known nickname of fool's gold. In contrast to real gold, it's worthless.
The best opportunity to sucker people into buying fool's gold is to banish real gold from the marketplace. After a sufficient period of time passes with the real gold "out of sight" and "out of mind", it becomes much easier to delude the populace into believing that fool's gold is the genuine article.
When truth is out in the open and can be contrasted with the looney worldviews of progressive liberals and other assorted miscreants, it's no contest. Just as genuine gold unveils the folly and worthlessness of fool's gold, so does genuine truth unmask the foolishness of the world's "wisdom".
The only alternative then for those trafficking in lies is to banish truth from the public square. And that is precisely what is happening - and why it is happening. Genuine truth is excoriated as racist, homophobic, sexist, xenophobic, islamophobic - you name it. As such, truth is automatically classified as inappropriate for public consumption and perhaps even illegal. Once banished from the public square, the enemy has free rein to market his deadly deception.
Unfortunately, the vast majority of those who buy into the fool's gold ruse discover too late that they have been duped.
On the other hand, those who have cast their lot with truth will never settle for fool's gold.