Good point...... And may I add that is the case also in most evangelical bible-based Protestant churches. For instance in our presbyterian PCA church it is considered true that to properly study the New Testiment we MUST use the references in the Old Testiment for understanding in the full context.
Without reading the Old Testament, it’s very hard to understand what Jesus and the New Testament writers are talking about. It’s like trying read modern English literature without being aware of Shakespeare.
My son and I observed that Isaiah is like “Hamlet”: the book that contains at least 50% of everyone’s quotations and imagery. Jeremiah is “Julius Caesar,” with the dirty political intrigue. Ezekiel is “The Tempest,” where you can’t really be sure what’s going on, but it’s cool.