Nor did the Pope, for that matter, even though (or more likely, because) the numbers of clergy arrested and held was many thousands, of whom about three thousand died in Nazi hands:
According to the latest research conducted by W. Jacewicz and J. WoS in the years 1939-1945, 2,801 clergy lost their lives.
Among them were:
In 1999 Pope John Paul II beatified 108 of those killed as "Blessed Polish Martyrs".
Those include:
Again, my point here is: even if the Church were to speak publicly about the Holocaust, you might expect it to begin by condemning the murder of its own clergy.
But it did not.
And that is the context for any discussion of allegations about "Hitler's Pope".
I understand your point but am not sure how much different the situation is today when looking around the World at ongoing persecution of Catholics and the relative silence of the Vatican.
If a Catholic Church in Nigeria is set ablaze along with it's congregation inside, Rome might respond with some statement calling for an increase in peace and goodwill. I don't understand it.