Looks like an interesting model, I’d love to try it out. But signup on mobile didn’t have auto suggest for my password manager (1pass), and I’m not going to separately create a username/password in 1P and then copy it over.
Maybe passkeys? Or better mobile support? Sorry to add on to comments from a few others — it does seem like an interesting model! Similar to FloatPlane, Patreon, etc. but in reverse.