You can limit the number of possible listens without buying on Bandcamp if you prefer people who actually consider paying for artists.

But yeah marketing an app as "this is free, we are great, while some musician didn't like it, but fuck them" may not be the cool humorous power move they thought it might be.

As a musician and open source programmer myself I don't feel I am automatically entitled to people's money for stuff I put out there. But while my Open source software is about giving back, I actually want people to value my music and pay for it (if they can and like it enough). So the tiniest bit of sensibility towards people who produce those things, often in their spare time, would help and costs exactly nothing.

If this was framed more like: "Discover music that is actually new for free and get in contact with the artists directly" that would be a different story.

This may turn out to be a good way to discover new music. And the bandcamp/soundcloud crowd tends to be after new unknown and good music anyways, so that should align with their ways of discovering music and make for a much better elevator pitch than the current one.