[underwater]

I wonder why they didn’t do the obvious thing for a crowd sourced site and introduce a manual way to define this content.

CMS’s for news publishers have distinct fields for link title and thumbnail images (appearing on the linking page) and article title and hero images (appearing on the destination page).

This seems redundant until you consider that the context for linking pages and the article page are different. Having clean summaries for each page on Wikipedia seems like it would be useful in many places.