Yes, I don't see this as a "rant against commercialism" at all. There are some very specific criticisms being made about one company's approach. The author seems to think non-profits do one particular task better than for profits, but that's not criticism against "commercialism" as a whole.
Further, its clear that this is a carefully considered position being presented in this blog. Why would anyone call such "a rant"?
Further, its clear that this is a carefully considered position being presented in this blog. Why would anyone call such "a rant"?