I just wish they had better SEO than say W3Schools
Same for RFCs. Let's search for "rfc 1855". The first item is indeed the original plain text source, unfortunately without links or anything: - https://www.ietf.org/rfc/rfc1855.txt But the second hit is a third-party source, that doesn't provide much over the plain text version. It doesn't even contain the RFC contents directly. I can't imagine anyone seriously linked to that page, let alone that so many are doing it…
https://developers.google.com/speed/pagespeed/insights/?url=...