Yup. If you care about ratio then it has some proper speeds and ssd. But most people use it as a hop. I stopped and switched the arr to a docker network that only uses proton vpn. Best decision ever.

Precisely but it doesn't have to be remote. Some people self host locally but that requires a fast connection and a vpn. Most remote seedbox's are basically virtual private servers. They usually have apps like Jellyfin or plex for streaming all your content locally. Which is what I do and it's very automated and convenient. You can also use your seedbox as a vpn tunnel. If you're a member or interested in private torrent trackers, a seedbox is recommended to help keep your ratio high.

Yes