We are not talking about illumination, Yeshua. We are talking about who can interpret Scripture properly and that is only those who are of the Church, because only Spirit led men can properly understand the Word of GOd.
And there is a system of leadership in the Church that there might be discipline. So the point is this: I can understand why the discipline of the Catholic Church, which stands in great contrast to some of the fellowships that are out there, might appeal to certain believers. And it is not hard to see why a congregation would count that their leadership knows what they are talking about. Its much like children and their parents, they look to their parents for guidance. And just like that relationship, we should all, as children (babes in Christ), mature, and begin by reason of use (study of God's Word) learn to discern good and evil for ourselves, which is where, not just Catholics, but all groups have a problem with. The primary problem being indoctrination, and the tendency most have to justify the beliefs of their leadership without judging those things which might be in error. But again, it is natural for children to defend their parents, even as it is natural for parents to defend their children ("My Johnny wouldn't do that! lol).
God bless.