Of course they aren’t. As netflix wouldn’t be enough too, you need internet, a device, an OS and an app. Wouldn’t mention those when talking about netflix too. So yes. Of course you’d need a downloader and probably an indexer too. And a firewall, vpn and whatever else you can think of, and a media-server, and an app, and a device and OS. Oh and a browser to input your search into. Probably a keyboard too :-)
But *narrs are those that take your input, query indexers, do the background-work, put results into your downloader(s) of choice and into your media-server of choice. They’re the crucial part here. Like the netflix-app for watching netflix-content. Everything else is your personal flavour.