Yeah, pretty much that - MS subscribes to some service that has recently changed the rating of the site.
I can’t read the linked article either - my work’s filter blocks it as “Category: Peer-to-peer File Sharing” even though, as noted, it’s a site with reportage on subjects centered around peer-to-peer file sharing, rather than a site used itself for the purpose. The intent was to prevent file sharing; a side effect that no one is too distressed about is that it blocks some journalism about file sharing.
Similarly, online game sites are blocked under the same rating as game review sites.
