I think you have a point to a point.
The do it yourselfer and the curious that may want to try this will find this a really good source of not what to do and where to do it but also how to go about it. The key thing here is the flow bench and the air speed probe to find, show and tell you what was good and bad about what your doing. Since it is that Pittsburghracer has experience in this area, and he makes really good sense of what you should be doing and looking for, it becomes an excellent tutorial.
Maybe in retirement when I have loads of time I’ll jump into this venture.