hearing rumours that songtradr is making some people sign up (with a fee) to get paid from bandcamp now. just so it's clear, I'm moving my music off the site as soon as that happens and I imagine most others will be, too, so I'm watching for alternatives

It's early to tell, but funkwhale might be a decent alternative.

It's free, decentralized, volunteer operated, based on fediverse technology (think Mastodon) and seems pretty solid.