That's your opinion.
You can't monetize an audience of zero. I thought about doing a separate monetization e-book, but this e-book is pretty blatant about its focus on only audience building.
Reddit is primarily US traffic. If you can't monetize that, that's your own shortcoming, I only show you how to build that large audience so you can play the game instead of observing from afar.
Also, the market rate for "subscriber rate and karma" are far from "meaningless." A quick search would show the level of karma and membership I'm advertising can exceed $1000+ and far, far exceeds the price of the e-book. Sold (not just advertised) account rates reaching as high as $10,000+. The absolute minimum rate (floor) would still far exceed the price of the e-book. I just don't charge that much for my knowledge, and it's the absolute arsenal for modern social media marketing as some testimonials have already said the methods can translate to other platforms.