Creating disinformation: Archiving fake links on the Wayback Machine

I was looking at archive.org for some stuff that had been on a site of mine 20yr ago, just the other day. They had it once, I've linked to it before.

Today they only show a MS-IIS "404" page for those pages as "what we archived".

Which is quite strange as those sites never ran on IIS; those URLS could never have produced that page.