To improve clarity for content editors in AEM, consider adding a visual indicator at the top of the page being edited to highlight that the page has been modified post-publication. This would help address the ambiguity that arises over time with the current "last published" and "last modified" dates shown in months in the page properties dropdown.
This would make it easier to spot discrepancies—such as when the page was published on the 5th but last modified on the 23rd—without needing to dig into metadata. See screen capture attached.