Thanks, SJB. Are you contradicting me or agreeing with me? I think what you posted fits with what I was suggesting.
You can go so far as to insult a discipline and be given the minorly negative theological note of "rash" --
Although it would be rash to cast aspersions on the timeliness of a law, especially at the very moment when the Church imposes or expressly reaffirms it, still the Church does not claim to he infallible in issuing a decree of practical judgment. For the Church's rulers were never promised the highest degree of prudence for the conduct of affairs.
Therefore, to merely question a discipline would not even be rash.
What would be more than rash, and bordering on blasphemous, would be to say a disciplinary law was harmful to faith and morals.
But the Church is infallible in issuing a doctrinal decree as intimated above — and to such an extent that it can never sanction a universal law which would be at odds with faith or morality or would be by its very nature conducive to the injury of souls.
That doesn't mean you can't say another disciplinary law was BETTER for faith and morals, does it?
Anyway, like with NFP, I have made my peace with the three-hour fast, I just assume there's some reason for it that I can't understand and that God knows about. I have some theories, like that He knew that Vatican II would lead to excessive rigorism in the opposite direction, and so He allowed a moderate path. Another theory is that he knew we'd have to drive longer to get to Mass, us sedes and other trads, and so He gave us a break, knowing we couldn't just go around the corner to go to Mass very often.
Like CMRI in Fontana has Mass at two thirty, if you were observing the after-midnight fast, you'd have to go for over fifteen hours without food or water. It can be done, and I think it's salutary, but God doesn't always push people that hard.