Relying on aggregated exchange data works for market-based oracles only until the markets themselves buckle under pressure. This critical vulnerability was highlighted clearly during the liquidation cascade that occurred on October 10th. By launching new fundamental valuation oracles, DIA effectively eliminates this specific dependency.

For more details, see the report by @BitcoinNews:

https://news.bitcoin.com/19b-liquidation-event-spurs-dia-to-launch-new-defi-pricing-oracle/