The value proposition is an average of 270 commits a day, for $4000/month, and the dramatic improvements to the game Yegge described. Even supposing 2/3 of them are burned on the scaffolding, 90 commits/day (assuming they’re of mostly good quality) would cost multiple engineers, one of which would cost much more than $48k/year.
As another comment said, the ultimate proof will be in the pudding. But I don’t think the value proposition claimed is complicated.