Well, there's the problem. In the Catholic religion, that is how saints are defined, but according to Scripture saints are those who are sanctified - set apart. Nobody gets that way through their own virtue no matter how "heroic" they are. We are called saints because we who have trusted in Christ for salvation have been made holy by the blood of Christ.
1 Corinthians 6:11
And that is what some of you were. But you were washed, you were sanctified, you were justified in the name of the Lord Jesus Christ and by the Spirit of our God.
Nothing we do well is done through our own power.
All that aside though, canonized saints aren't the only saints. The very word "saint" comes from "sanct" which comes from "sanctus" which means "holy"... "set apart". See? We agree.
So in the Mass we see this:
Mindful, therefore, Lord, we, Your ministers, as also Your holy people, of the same Christ, Your Son, our Lord, remember His blessed passion, and also His Resurrection from the dead, and finally His glorious Ascension into heaven, offer to Your supreme Majesty, of the gifts bestowed upon us, the pure Victim, the holy Victim, the all-perfect Victim: the holy Bread of life eternal and the Chalice of perpetual salvation."et plebs tua sancta," "and people your holy" which obviously needs to be read as "and Your holy people."
Santa Claus? Holy Claus. etc, etc, etc. The acknowledgment of particular people who are in heaven in no way eliminates the holiness of the people of God still on earth or that certain things are set aside for holy purposes.