Yeah, this. I suppose the closest substitute will be to configure directory listings at the http server, although I suspect UX people will get their hooks in to make it pretty instead of efficient. (Ever tried to find something specific but not currently promoted on Dell's site?)
Dell's site is a nightmare. Shopping for monitors has been one of the most inexplicably complex affairs I've ever seen. It also doesn't help that any link to their US site redirects to the dell.ca front page, making it extremely difficult to follow links from forums, google searches, etc.
I never seen a distro that didn't have a http mirror for those things myself. Even the ones that offer ftp.debian.org for example are accessibly over http as well.
I would genuinely be surprised if even 5% of users used FTP in the last year. But damn do I wish they kept the feature in; Firefox should distinguish itself as the tech worker's browser, sorta like a forensics live CD that has every imaginable tool you need for deep work.
Some files from Adobe are available on their ftp server, it's kind simple to get them through clicking a link than copying the path, opening up an FTP client, connecting, etc.
There are some areas where FTP is still used and an easy options. Like datafeeds of affiliate platforms. Having support for accessing those in Firefox was super useful.
