The attitude you describe in your third paragraph is also a thing, but I suspect less common. While yippee-I’m-not-going-to-get-pregnant! is not very edifying, I don’t think a little natural human relief at getting a break (especially in the face of a history of nasty gynecological conditions) is supposed to rule out the therapeutic use of birth control pills.
I agree that some “natural human relief” is only, well, human. But the posts I recall made it very obvious that some people taking ABC for a “health exception” saw it as merely a technical loophole they were happy to take advantage of. One wasn’t even from a woman, it was from a man who hated using NFP and was overjoyed when his wife began to take the Pill for “health reasons”.
If birth control pills are objectively the best treatment for a condition, they are the best treatment. I would certainly not encourage scrupulosity in that situation, as I’ve seen a multitude of posts on CAF from women suffering debilitating gynecological issues who hesitated to follow their OB/GYN’s advice. If anything, I think scrupulous avoiders of licit treatment outnumber (or at least equal to) the Yippee! crowd on CAF–which is more or less what you would expect. And given the extreme physical damage that medical neglect can cause, I feel less concerned about people “getting away” with something than the human suffering caused by the other extreme.
I think this is probably true when it comes to the CAF population. I also find it incongruous when women submit to fertility-ending surgery such as hysterectomy because they find it to be “more Catholic” than using hormonal treatments. (On the other hand, that is the standard Catholic line regarding treatment of ectopic pregnancy, submitting to complete removal of a Fallopian tube, that will end fertility for the unfortunate woman who has had ectopic pregnancy more than once, is the “Catholic” option as opposed to less invasive treatments. Of course that involves the life of a child, but isn’t contraception supposed to be just as sinful as direct abortion?

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As for the horror stories about NaPro providers. Their attitude toward their chosen mode of treatment, ironically, doesn’t strike me as that different than the attitude many other medical providers have toward hormonal treatment. Though certainly not all, and this is likely more an issue that affects the medical profession in general, regardless of their religious beliefs - though medicine is actually a lot LESS patriarchal than, say, 20 years ago.
Perhaps the scarcity of NaPro providers tends to facilitate such an attitude, they know their patients don’t have many other options. Much as rural docs tend to be more patriarchal than urban docs who have more competition.
Though perhaps the “this is obviously the best treatment and if you don’t follow it, you’re a bad patient” attitude isn’t quite as distressing to Catholics as a “this is obviously the best treatment and if you don’t follow it, you’re a bad patient AND a bad Catholic” attitude.