There IS a spiritual blindness at play. Yet, when the Holy Spirit lifts the veil and we can clearly see it, we realize the truth of the gospel and it is clear as day. What all our lives had been hidden is now completely logical and true. Until that happens, there will continue to be a shroud of confusion over the eyes of those who will not see. Seeing they see not and hearing they hear not lest they be saved.
(Matthew 13:14-17)
In them is fulfilled the prophecy of Isaiah:
“You will be ever hearing but never understanding;
you will be ever seeing but never perceiving.
For this people’s heart has become calloused;
they hardly hear with their ears,
and they have closed their eyes.
Otherwise they might see with their eyes,
hear with their ears,
understand with their hearts
and turn, and I would heal them.
But blessed are your eyes because they see, and your ears because they hear. For truly I tell you, many prophets and righteous people longed to see what you see but did not see it, and to hear what you hear but did not hear it.
Those are the key words BB, THE EYES OF THOSE WHO WILL NOT SEE. Like me, they are blind as bats. I, on the other hand, responded to the truth, when I was exposed to it. When they are warned about the truth, and reject it, in favor of their own WBRs, then they become THOSE WHO WILL NOT SEE. That's on them.