Mostly the author is finding a marketing niche and doing it well, I’d say. It’s not easy to get published and noticed and go viral to the point of it showing up on a Facebook group.
But if he is truly an idealist. which he may be, it might be a “rise up” moment but for the group that is his audience. Make a niche, find your own path, join in loose coalitions of good will.
It’s a theme we’re heard before from different groups in different times. Sometimes it works, sometimes the dominant subculture overwhelms regardless of effort.
But I’m all for it. If I was the white ally donor, I’d pour money into it just to see what good stuff comes out of it all. In the end, it results in more and better music for the world to enjoy. After all, how often can you play the same pieces?