Incorrect bulk changes to all Last Modified dates

I’m having trouble with all of the dates on my Last Modified line updating en masse for administrative changes not related to copy edits. For example, I use a website hook under blog content to manage a banner ad – and when I change the URL on the hook to swap out the banner, the Image ID number changes on all blog posts, so they all show the same Last Modified Date.

It has nothing to do with an actual refresh to the article.

This means I can’t use Last Modified dates to tell which blog posts need an actual update, and it means the schema date changes are falsely reporting content updates…which can be a potential SEO problem.

Is there a way to fix this? Maybe a setting that limits Last Modified date changes to actual copy changes? Or a way to rule out anything related to administrative tasks, web hook changes, etc? Or perhaps is there a way to set a threshold that 10% or more of the content must changed in order for the Last Modified date to change? Perhaps that would eliminate false bulk update changes?

I guess I expected the plugin to show when the copy of a post was updated, not every single change to any part of a page. What’s the point if all posts show the exact same Last Modified date? Website visitors think the site is doing something unethical or black hat.

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