I think the word “growing” is espoused in this way, in the topic and discussion. Though it’s just a pondering guess. In this way, is the Church “increasing.” Like in large numbers. Thus, the word “growing” may not really be the right term for what is likely meant from the topic presented.
The Church can grow in one way. But as Christ said. He also prunes branches. If it grows more roots, but the branches are pruned. Then, you can say She is growing. But, She is not increasing. Thus, I don’t think the word “growing” articulated what you really meant.
The Church grows in holiness. And that increases. Hence, in that way She increases. It’s quality over quantity. She holds the ember of Truth. No other belief holds this.