So, I put this to you, are the fools to blame that our way is not/has not been straight(the cause of their err)? The answer is absolutely not. Who is to blame for the unclean amongst our ranks? Read the passage. Is the church holy, or is it not? The answer is, it is holy. Because, it belongs to the holy.
In sum, it is a grave error to be blaming others. We must blame ourselves.
Okay, let me get this straight.
You are trying to make a distinction of who deserves blame. You are telling me that we should not be blaming other people
for the uncleanliness. Instead, you are telling me that we should blame ourselves
for the uncleanliness in the Church.
Either way, whether we're blaming other people or ourselves, we are talking about blaming people--human beings.
Whether it's the former or the latter, either is more correct than saying "The Church has a lot to apologize for."
The distinction I am drawing here is that The Church--this Institution that we are in, which is a pure institution that is powered by the Holy Spirit--is good, clean, and blemishless. The Church has nothing to apologize for. It is individual human beings who are culpable for whatever crimes you'd want to point out. But in no way whatsoever has the Catholic Church caused any kind of a crime in the history of mankind.
I am not trying to be ambiguous. If anything, I am trying to clean up, clarify, and make distinctions that the author in the OP failed to make.
The author in the OP appears to be lumping together both The Church and the fallen culpable men within the Church. I am taking issue with the author--and everyone who thinks that the Catholic Church is guilty of crimes.