Exactly. Any failure is on their part, not his. The endpoint of your argument is not so much a condemnation of Luther et al., but the recognition that the charisms of the Church don’t work the way Rome teaches.
You’ll need to guide me through that logical leap. I don’t see it.
The Papacy, supposedly the great guarantor of Church unity, has failed utterly in preserving the visible unity of the Church Catholic.
How so?
The Catholic Church is still unified. That some have chosen to split from it is indicative of their shortcomings, not the Church’s, and not Christ’s.
Placing one’s ecclesiological faith in the occupant of that See - however holy and venerable he may personally be - is to set oneself up for a fall.
We place our faith in Christ, and His promises regarding St. Peter, such as:
Lu 22:31 “Simon, Simon, behold, Satan demanded to have you, that he might sift you like wheat,
32 but I have prayed for you that your faith may not fail; and when you have turned again, strengthen your brethren.”
Joh 21:15 When they had finished breakfast, Jesus said to Simon Peter, “Simon, son of John, do you love me more than these?” He said to him, “Yes, Lord; you know that I love you.” He said to him, “Feed my lambs.”
16 A second time he said to him, “Simon, son of John, do you love me?” He said to him, “Yes, Lord; you know that I love you.” He said to him, “Tend my sheep.”
17 He said to him the third time, “Simon, son of John, do you love me?” Peter was grieved because he said to him the third time, “Do you love me?” And he said to him, “Lord, you know everything; you know that I love you.” Jesus said to him, "Feed my sheep.