There is also “Owncast”, but it seems to suffer from the same issue that peertube does; there is no integrated revenue system for the streamer, so there is little reason to put effort in to the quality, as well as it being fairly unknown, so even if you set up donos etc. the audience isn’t there.
The discoverability don’t help, since there isn’t really s good way to filter out all the “24/7 radio” -streams, so even if you actively follow the frontpage, or a category, you have to skim trough them manually. Also, there is no proper language filter (at least if you don’t have an account), and it seems it’s more popular with non-english speaking streamers.