So, possible 'hot take' here -
-NOBODY- looks good in the 'Reality Winner' case.
The Intercept was extremely careless with how they handled the material they were given.
Reality herself is apparently so utterly inept it's astonishing that she was able to get the document in the first place.
And the counterintel that managed to finally catch her? THEY are also inept; she -sucks- and she -still- managed to get the document out.
It's not so much that people forget about Usenet as that they forget why it died.
It got spammed to death.
It lost control over its culture, and that culture was crucial to its functioning.
It was too problematic for ISPs (or others) to provide ready access to it: spam, harassment, child pornography, and copyright violations all posed massive concerns.
There was no viable business model for providing the service.