That's nice. Still does not work-- over each generation the "tradition" is EDITED to fit the biases of what is currently popular within the culture.If they did, other tradents and even community members would step in and correct the tradent. Tradents very seldom passed on oral tradition in one-on-one settings. There were two reasons for this:
1) Public Transparency- This was the primary reason. To prevent distortions by passing on oral histories in front of as many people as possible, many of whom were also witnesses to events.
2) To avoid fatigue from having to repeat the story too many times in smaller group settings.
You are being naive here, if you think that doesn't happen.