Really? I mostly call Mary “the Mother of God” with protestants, and “Our Lady” pretty much everywhere else, it’s hard to just call her “Mary”, just as it is to call Our Lord “Jesus” all the time- too too familiar for a person we in fact believe to be our Savior and God in the flesh. In the same manner, I rarely call the saints by their names without inserting “St” as a prefix. I feel disrespectful when I say, Paul, Peter, John, John the Baptist, Joseph (Most especially st. Joseph, father of our Lord as simply "Joseph’)- It can only be appropriate to say- St. Joseph etc.
Of course, if you’re interacting mostly with non-religious people, you’ll likely not hear them use reverential terms, Catholic or not. But you would not expect to hear religious folk, especially in a religious context, not applying the terms.
For example, on internet forums, it’s usually easy for me to pick out trolls who pose as orthodox Catholic, or even orthodox Protestants and other Christians, when they are Muslims or non-religious etc by how they speak. A person who never refers to Christ as The Lord or Our Lord, The/Our Savior, The/Our Redeemer etc strikes me as either a non-Christian or if Christian, a non-Orthodox one. One who never refers to Our Lady as our Lady, the Mother of God, St. Mary, Theotokos, Our Blessed Mother, The Blessed Virgin etc- and is fond of referring to the Saints without the St. or Blessed pre-fix before the Saint’s name cannot convince me they are Catholic or Orthodox- at least not “orthodox” members of the churches. I do refer to them like this so often that I’ve discovered I’ve influenced my SDA mother into always referring to the Apostles and others as St. Peter, St. Paul, St. John the Baptist, St. Steven, St. Elizabeth etc.

which is unusual for her.