If you're currently into researching sqlite questions and it happens you prefer one sites explanations, it likely comes up in the first few pages of a result of new questions on sqlite. By looking into bookmarks and history the users preference is clear.
In general you're right as in: most often in the first few result pages, there is no hit of sites you prefer. I think an extension that lists the most popular pages that have user-agency to the top can already help without curated blocklists: rank wikipedia, stackoverflow sites, github and reddit to the top.
