Nginx is totally relevant as many ISPs including our use GNU/Linux boxes running Nginx as a highly performant transparent proxy (there are TPROXY patches for Nginx) to dive into HTTP traffic and do URL filtering (obviously, after initial crude IP-based filtering). Costs less than those fancy Cisco solutions, and it's not like we're willing to spend additional money on something that downgrades the service.

Also, there are cases where actual sites are legally forced to remove resources. Well, not really forced, but it's just a sort request too many sites can't really decline. You either comply and remove a single page (blocking for Russian visitors only seems sufficient), or get blocked on ISP level and since many ISPs (including several giant ones) just blacklist a whole IP address, that means your site becomes completely unavailable.