This is a conundrum. But basically if you can't communicate with someone, you can't very well deceive them. You can't deceive a blind person with a doctored up photo as "evidence."
But it is a catch-22. The not so smart are not as susceptible to propaganda. If you can't read you can't be deceived by something written down.
So on a spiritual level, the more intelligent are more of a Satanic target, because they can be more easily deceived. Things have to be "logical" to them, but you can fake logic.
Now the REALITY is that God is real and there is lots of evidence supporting that. But what you find is that the evidence that supports the Bible is ignored.
So one reason more "intelligent" or educated people tend to doubt is because they don't check facts out for themselves, seldom think for themselves, and just trust the "experts in the field" whom they don't realize are dishonest oftentimes. They respect people who have "higher education" more than trusting themselves. This makes them more prey to deception and high-level con games, because part of their educational process includes thinking that those with degrees and of higher education are also honest.
So it seems Satan's scheme is working; his focus on the intellectuals who get confused by all the rhetoric.
Now, by contrast, I'm intelligent. But I do my OWN research and conclusiosn rather than relying on the biased opinions of the "experts" in the field, which is what lazy intellectuals do. CASE IN POINT:
Okay. Lots of evidence is in place that confirms David and Solomon. For instance, a period worthy of Solomon's glory and great wealth is clearly established by archaeology. Only it is established in the early 9th century and not where Solomon is dated from 970-930 BCE. Now the expert in the field, like Israel Finkelstein looks at this and decides that David and Solomon must be myths since where the Bible dates them the archaeology is showing it is about a half century too early. Interestingly, this is exaggerated by Finkelstein to a full century. Other "intelligent people" who havent' had an original thought since the 3rd grade figure this looks good and thus the Bible is not true and they become non-believers. However, this is an issue of the timeline. Finkelstein should have criticized the current timeline and said that the evidence for David and Solomon were a half century later and so the timeline must be wrong. That was an academic choice, rather than presuming the timeline is fixed and correct and that, therefore, David and Solomon are myths and Omri should get credit for the massive buildings worthy of Solomon that show up in the early 9th century BCE.
Now I'm an intellectual and a believer. Why so? Because I did my research! I found out Xerxes fakes his own death and claimed to be his own son, Artaxerxes, and then added some 82 fake years to the Persian Period. No big deal, the egos of kings or their court officials trying to impress the king more than justify the lies and revisions. But where are the "intelligent people" who need to see these revisions? Suddenly they are "too busy" to figure it all out. Suddenly, they are "absent minded" when it comes to "conspiracy theories." So they actually CHOOSE to be stupid F*&ks when it is convenient.
In the meantime, if you correct the revisions of the Persian Period and correctly date the 1st of Cyrus to 455 BCE and the Exodus to 1386 BCE, then David and Solomon appear in their archaeologically correct time frames! Thus the Bible is confirmed.
So it turns out you have dummies, medium intelligent and super intelligent. The medium intelligent are the targets of deception. But the super intelligent still believe because they can see around the dishonesty.
So only the big glut of medium intellectuals tend not to believe. The super intelligent remain believers.