Considering there are 6 Active Wiki Users (1 moderator, 3 translators, 2 bots), posting on the forum gets a faster response (previous post reporting a typographical error was reported and resolved very quickly)
The Wiki category is a category in which you can report any wrong, missing, out-of-date wiki content or suggest any idea about the wiki.
Reporting via forum is also more open, so forum users can validate, rebut, or obfuscate comments,
or maybe suggest a replacement URL so the moderator can update page with minimal delay
I found an external links search page on Wiki that shows more links to archived forum
Manjaro Wiki - Special Pages - External links search - https://archived.forum.manjaro.org
The pages mentioned in your post have been been edited to remove outdated links
Difference between revisions of "Block Lists for Deluge & qBittorrent" - Manjaro
Difference between revisions of "System Maintenance" - Manjaro