RFF will be missed! For Fedi music you could try https://theindiebeat.fm/ … or this one has mixes rather than radio https://www.audiointerface.org/

I think it won’t be abandoned, but we have to find better ways of filtering out AI slop. There are already quite a few search engines with curated networks of personal sites.

Another option is we switch to a different protocol. But internet style networks are too useful for human communication to abandon, I think.

loops.video is in development, from the same dev who did Pixelfed