Likewise - I see far too much speculation and crypto-mania and not enough compelling original content. I am a media composer primarily, and my main hope for musicoin is partnerships with record labels and established musicians. As to your garageband user comment - There's gotta be some level of credibility - but - other platforms like soundcloud and bandcamp are not filtering their content for quality either... they are providing a service.
RE: Musicoin - A Roadmap