Now to think of it, I'd like to see one useful example of its usage. Haven't seen one in a long long time.
https://interconnected.org/home/feed
You’ll see if you view source that it’s an RSS (XML) file that your browser doesn’t know how to render. But at the top, there is this:
<?xml-stylesheet href="/home/static/styles/pretty-feed-v3.xsl" type="text/xsl"?>
https://github.com/genmon/aboutfeeds/blob/main/tools/pretty-...
Though I'm still unsure if supporting that use-case indefinitely is worth the long-term effort. In the same way that FTP support was dropped.