The source – searchengines.guru
SEO consultant Cyrus Shepard pointed out that “follow” is missing from the list of effective indexing and content display directives in the “Specifications for the robots meta tag, the data-nosnippet attribute, and the X-Robots-Tag HTTP header”.
TIL: Google's docs don't support the robots "follow" directive:— Cyrus (@CyrusShepard) July 20, 2021
<meta name="robots" content="noindex, follow" />
Which nearly all SEO articles lists as a valid practice. Might've missed something, but does Google ignore follow directives now? cc @johnmuhttps://t.co/5O12E4Fn7C pic.twitter.com/JvaNASoI4P
He wrote about it on Twitter and noted in a post by Google employee John Mueller. He confirmed that Google no longer supports the follow directive in the robots.