Does it really appear to you that these are the only possibilities to explain why some people value the role and rule of law?
There is valuing the rule of Law, and then there is pharisee-ism. I am not calling everyone who values the rule of law a Pharisee; but I am saying that Christ Himself tried to move the Pharisees away from that; seems they did not learn.
Someone who has to have morality in black and white is not per se a Pharisee (they were generally, for their time and place, more educated in the Law than someone who simply has not reached a mature level of faith), but that person is still unable to see that there are circumstances where black and white simply falls short.
Further, black-and-white morality tends towards a complacency of faith - “I didn’t commit a mortal sin, therefore I am good to go” attitude. Christ calls us far, farther along in our faith walk than simply not sinning. And yet, many with a black-and-white morality do not get any farther along than “I didn’t sin”.
I value the rule of Law; I also happen to be involved with Catholics Returning Home, and the experience from that is that each of us is on a journey; some are out wandering around with no clue where the path is; some are seeking the path but have not found it; some have found the path, but cannot manage it at all; and many of us have found the path, and wander off it from time to time.
I also value our priests, particularly our newer ones. In 70 years, I have seen a whole lot of priests; some were angry, distant, and took a rather mechanical appearing approach to the Church. Some were loosey goosey. Most of those have died; the rest are now retired.
I have also met many priests who strive to be holy, to be Christ-like, and are doing their very best to pastor those they are responsible for. I don’t find them to be fast and loose with the Law; but I do find them trying to bring people to a better understanding of the Law and their own flaws, and seeking to help those people to overcome those flaws.
I agree with Dr. Peters that this document, while having Magisterial in it, is not meant as a Magisterial pronouncement. Rather, it is a field practice guide for priests.
Any priest who is not aware of the biblical commentary in Paul concerning receiving unworthily already has an issue and does not need this document to have that issue. I have yet to meet a priest like that, currently ministering (and I will leave some of the 60’s - 70’s craziness out of that- but they are retired/dead). Maybe there are scads of them all over the US - but I in all sincerity doubt it. So I sincerely doubt that priests are going to go off half-cocked, ushering in each and every individual in an irregular marriage.