Am I missing the "rises again like a Phoenix" part? This article is just a brief description of what Usenet is, for people under 45 years of age. There's nothing in here about Usenet usage being on the rise, or anything like that. This article talks about Google Groups in the present tense, even though its Usenet hosting permanently ceased around 8 years ago.
The crux of the article is that the Big-8 board has reconvened and is active again; I spent a paragraph or two on that. That's what is back, and that is what the headline is about.
Google Groups is still current and comparing a couple of groups to my Eternal September feeds, they are in sync, so I call [[citation needed]] on that. If you can't back it up, I think it's disinformation you've picked up somewhere.