Devin, that Created At fields is sort of a "special" one. It's there more for a quick visual reference, and not one that can be addressed with formulas or AI or the like. (This was an intentional choice in the past, due to potential for infinite loops of an integration referencing those datetime columns like "Updated At".)
That column could be exported, though, and could be re-imported as a date field that you could reference. Curious to know more about your use case – happy to pass that along as they consider changes for this.