Comment by kazinator

The vast majority of the spam content is injected into these newsgroups via Google Groups itself, and is not even seen on other NNTP servers.

Blocking posting access to these newsgroups from GG is generally a good thing for those newsgroups.

Not being able to search the archive is the unfortunate collateral damage though. Google is not obliged to provide a Usenet archive, I suppose.

Formerly obtained deep links to the content also do not work!

If you formely cited a comp.lang.lisp article by giving a direct link into Google Groups, people navigating it now get a permission error.