+1 for Tramp. You can connect to SMB, ssh, and even docker containers from within Emacs. It's strictly better than using a remote ssh session with vim because you don't need to configure anything server-side. It would be a huge hassle to setup plugins like autocompletion on a remote machine for vim, but Emacs lets you use all your regular plugins while ssh'ing, which is a huge bonus.

Vim can also edit remote files, with its built-in netrw module. It can do ssh, ftp, dav, fetch, http, rcp, rsync.

vim scp://[email protected]//absolute/path/to/document

:help netrw-start

But will every other Vim plugin (like fuzzy-finding file browsers or whatnot) work with netrw-accessed files as if they were local? Does it trivially do multi-hop SSH through e.g. bastion machines?

I have yet to see something as powerful as tramp for this.