I'm here to share the first version of my caching soundcloud RSS feed generator. It's written in bash, being released under the GNU GPL 3.0 license. Go try it out!
Do note that it uses soundcloud's apiv2, so technically it is against ToS, but yt-dlp uses that api and it seems to be fine. Syntax is really simple, run
scrss [artist-url] and you'll get an Atom format RSS feed on stdout.