Because Modern Man knows that there can be no divine revelations.
Anything which might seem like a communication from the divine, or evidence of the divine, is therefore a mistake. For sure. It is either wishful thinking which is the basis of religion, or a product of terror - which is also (somehow) the basis of religion, or because of ignorance of science and statistics, or because of manipulation of public opinion, or...
Well we know it can't be true; so if there are a lot of people who insist it is true then they must be evil lying manipulators, ignornant fools, or mentally ill. Probably mentally ill - because delusions.
So if Modern Man is sure that divine revelations are not true, then he cannot be convinced otherwise by any 'evidence' at all - no matter how much evidence or of what type: he will deny that it is evidence.
The big question is, where did Modern Man get the fixed conviction that there can be no divine revelations? - because there never could be any evidence for that - yet he is absolutely sure about it.
Depsite that most people in the world today, and everybody in history (and himelf when he was a child) believes otherwise... (i.e. that there can be divine revelations)
Why then does Modern Man believe with 100 percent confidence it is incomprehensible outrageous nonsense?
Now that is very strange indeed.