I think they're confusing layers. The internet is more than just http servers. The IP traffic is routed around problems all the time. If the HTTP server is down

I think they're confusing layers. The internet is more than just http servers. The IP traffic is routed around problems all the time. If the HTTP server is down, that doesn't stop the packets from arriving there (having been routed around dozens of down links and broken routers at any given moment).