For the oracle system to be reliable, the core is "usable even in abnormal times." When things are stable, anyone can provide a price; the key to distinguishing between infrastructure and thin-shell systems is whether it can filter noise, maintain updates, and trigger protection when pressure arises. The more complex on-chain finance becomes, the more it requires this kind of abnormal usability.
As a user, you can use abnormal usability as a filter: Is it still updating steadily during high volatility? Is there any filtering during abnormal trades? Is the protection trigger clear and understandable? Is the behavior consistent over the long term? Only systems that remain usable in abnormal times deserve to carry your long-term funds.