Hindu tradition state that it directly led to elaborate literature and rich story telling. Puranas [1] and epics like the Ramayana [2] and Mahabharata [3] were orally transmitted as well. The point being that the Vedas are pretty terse which makes it hard to understand or apply without specialized knowledge / background. The Puranas, Ramayana and Mahabharata provide context via stories etc..
1. https://en.wikipedia.org/wiki/Puranas 2. https://en.wikipedia.org/wiki/Ramayana 3. https://en.wikipedia.org/wiki/Mahabharata