There's more details on https://github-wiki-see.page/ https://github-wiki-see.page/ and https://github.com/github/feedback/discussions/4992#discussioncomment-14

There's more details on https://github-wiki-see.page/ https://github-wiki-see.page/ and https://github.com/github/feedback/discussions/4992#discussioncomment-1448177 https://github.com/github/feedback/discussions/4992#discussi... > we have also introduced an x-robots-tag: none in the http response header of Wiki pages > Abusive behavior in Wikis had a negative impact on our search engine ranking > GitHub is currently permitting a select criteria of GitHub Wikis to be indexed