That is the most wrong explanation of what it takes to be a saint that I have ever read. You are right if you are describing what it takes to be declared a saint by the church. But the church recognizes that anyone who dies without the stain of mortal sin on their soul becomes a saint.
SAINTHOOD 101: Rules for Becoming a Saint [Catholic Caucus]
The Process of Becoming a Saint (Canonization) [Catholic Caucus]
Pope Lists Criteria for Causes of Canonization