If I’m understanding the OP correctly he/she is speaking about the miracles required for canonization. The miracles are not part of dogma. The Holy Father can dispense with them. For example, St. Francis of Assis was canonized without any miracles. He was never beatified either. Neither were St. Anthony nor St. Clare. Three of the great Franciscan saints were never put through the test for the cause of saints, even though it was in place at the time. The three were canonized on the personal reconisance of the pope. He knew them personally. He infallibly declared that they were saints. This happened long before Vatican II.
As far as those who have been beatified and canonized after Vatican II, the miracles were studied and foud to be true beyond any reasonable doubt. Among them are:
Maximilian Kolbe, Teresa of Calcutta, John XXIII, Pierre Giorgio Fraseti (sp?), Damien of Malokai, Pio of Petrocina (sp?) and many others. Let’s just take this small group. Who would question that they lived a heroic Christian life? This is what beatification and canonization means. The miracles after their death are a later requierment of the Church. This did not exist until the 12th century.
The early saints were never canonized, such as the Apostles, prophets and Church Fathers. They were accepted as saints by tradition. There were no miracles demanded for that.
The process has never been the consistent. What is consistent is that a pope must accept that they are saints. Once they are accepted as saints by a pope, no Catholic may refuse to believe it. It becomes part of the faith of the Church. Canonization by formal investigation or by the vox populi is an infallible statement of the Church. It is held without question, as we hold the Immaculate Conception of Mary, the primacy of Peter, the resurrection of Christ and the sacraments. There is no taking or leaving.
One can have a devotion to one saint and not to another. The Church does not demand that one have a devotion to every saint. She demands that every person whom she calls a saint or blessed be venerated by all the faithful. And the saints must be included in the Church’s liturgical life, whether we Catholics like that saint or not. The blesseds are a little different. They must be venerated in their home dioceses and by their religious congregation (if they were religious). Outside of their dioceses, it’s up to the local bishop to decree public veneration. If the bishop decrees public venaration of a blessed, then all Catholics in that jurisdiction must give their assent.
For example, in the diocese where I am currently stationed, the bishop has decreed that we publicly venerate Bl. John XXIII and Bl. Mother Teresa of Calcutta. We have two parishes named after them. This is not up for discussion. It’s not a matter of personal discretion. They must be venerated. But you are not obliged to have a devotion to them. By venerated it is meant that their holy day is observed and the liturgy proper to their holy day must be celebrated.
Fraternally,
Br. JR, OSF