I think the point is not that music software enables you specifically would be able to produce worthwhile music, but that it enables many people who are musically talented to create and distribute their work. There is, of course, an implicit assumption that there are a large number of such gifted people, but that assumption may not be as outlandish as it first appears. I had many friends from high school marching band who earned pocket money playing at weddings and such, yet every single one gave up music by the time they graduated from college.
We all know that anecdotes are not data, but the legacy music distribution model seems to be optimized for using labor efficiently a case where fixed and marginal costs are higher than they currently are. It is far from obvious that those optimizations are good ones where the cost of recording equipment has dropped by orders of magnitude and the cost of distributing a single song is so low that people will do it for free.
We all know that anecdotes are not data, but the legacy music distribution model seems to be optimized for using labor efficiently a case where fixed and marginal costs are higher than they currently are. It is far from obvious that those optimizations are good ones where the cost of recording equipment has dropped by orders of magnitude and the cost of distributing a single song is so low that people will do it for free.