Technically we can but then they won't be groupped into releases on other platforms. It's an annoying limitation of how most of Podcating 2.0 apps work. It can only be solved if all platform adopt a new standard.

Right now it's free cause we only have couple of artists hosting RSS. We would need to find long term solution. Proper RSS support is still in the works. In the meantime you can at least publish to Nostr Music.