It's hard to find a non-right-wing source promoting extraordinary right-wing campaign claims that are not accompanied by evidence or a credible background story.
The story from an HN point of view is not the campaign claim—that would probably be off topic—but the actions taken by Twitter and Facebook, which are significant new information [1] about an interesting new phenomenon [2].
[1] https://hn.algolia.com/?query=%22significant%20new%20informa...
[2] https://news.ycombinator.com/newsguidelines.html