Why have all Microsoft download links for wushowhide.diagcab been broken for many months?

There's something wrong here.
On Win11 there's no way to stop a particular driver update that should not be installed.
In my case it's an AMD graphic driver not compatible with Adrenaline graphic management software the same AMD provides.
Wushowhide.diagcab is blocked, even if its link is available on the Microsoft sites you all mentioned.
The process of updating (Solarwind docet) is a particularly sensitive and vulnerable one.
Therefore, "social.technet.microsoft.com" should be removed or updated with meaningful content.
Graphically, it looks abandoned.
And, notoriously, "social.technet" has been replaced with "techcommunity" where this post is published.
The problem in subject remains open, and users and IT operators should underline it in any available feedback space Microsoft provides.