I don't disagree with this. Actually, I agree with you in the most general case, but it also removes the transparency when there is something that's quite questionable taking place.
Prof. Lareau spoke about the case of someone making a donation that ultimately is not a donation because something is returned to the person later.
We're talking about aggressive tax avoidance. We can't do our work, and we can't get to the bottom of things regarding situations like these, because there is such secrecy.
How do we get around this? How do we ensure privacy, and how do we prevent that privacy from becoming a hurdle that encourages what could be illegal or immoral behaviour?