It never ceases to surprise me how some allegedly former Catholics are so incredibly ignorant of Catholic teaching. It border upon the obtuse.
Saint is synonymous with holy (sanctus). Roman Catholics, the Eastern Orthodox, Anglicans, and Lutherans all refer to him as Saint Michael the Archangel and also simply as Saint Michael.
Peace be with you.
Michael the archangel is not a saint because he never had to be sanctified.
He never fell into sin.
Thtat’s why we don’t call him saint.
"Saints are not freaks or exceptions. They are the standard operating model for human beings. In fact, in the biblical sense of the word, all believers are saints. "Sanctity" means holiness. All men, women and children, born or unborn, beautiful or ugly, straight or gay, are holy, for they bear the image of God.
Saints are not the opposite of sinners. There are no opposites of sinners in this world. There are only saved sinners and unsaved sinners. Thus holy does not mean "sinless" but "set-apart:" called out of the world to the destiny of eternal ecstasy with God.
http://www.catholiceducation.org/articles/religion/re0004.html
The road to sainthood begins at the grass-roots. Ordinary Christians, perhaps in a parish or a religious community, recognize that someone of extraordinary holiness has lived among them. The memory of that person inspires them. The story of his or her life is told, perhaps in a book. People pray to the person, asking intercession for some favor, and their prayers may be answered. Extraordinary signs, perhaps a cure from sickness, occur. A local group may be formed which seeks to make this person's life and gifts more widely known
http://www.cptryon.org/ask/ask/beat.html
This is what the Catechism of the Catholic Church says about saints:
2683 The witnesses who have preceded us into the kingdom,[41] especially those whom the Church recognizes as saints,share in the living tradition of prayer by the example of their lives, the transmission of their writings, and their prayer today. They contemplate God, praise him and constantly care for those whom they have left on earth. When they entered into the joy of their Master, they were "put in charge of many things."[42] Their intercession is their most exalted service to God's plan. We can and should ask them to intercede for us and for the whole world.
A saint is one that has LIVED on this earth and is made holy by God, lived holy lives and are role models for our faith .. Angels do not fit that description
BTW i had a friend ask a Monsignor that question and his response was "thats a good question..i don't know..." Guess he must be a dumb catholic too