Also I think the problem at hand doesn't necessarily have to do with hidayat, but also akal (intelligence). Brothers lacking in the later department might endure great difficulty learning many aspects of deen.
I agree with your post, particularly the part where you talk about how a lack of "aql" (i.e. intelligence) is also part of the problem that we face as an Ummah when trying to learn about Islam. But I don't think that this problem is restricted to the laymen alone. I have met many an "alim" who seems to be lacking in this department, specifically in their application of logic. It is quite sad.
May Allah rectify our situation as an ummah.