> The early RFCs were, in fact, requests for comments on ideas and proposals; the goal was to start conversations rather than to create an archival record of a standard or best practice. This goal changed over time, as the formality of the publication process evolved and the community consuming the material grew. Today, over 8500 RFCs have been published, ranging across best practice guidance, experimental protocols, informational material, and, of course, Internet standards.

> https://www.rfc-editor.org/rfc/rfc8700.html

Nowadays you're supposed to comment before it gets to "Internet standard"