As it was me who said it, and the tone of your post makes me think you are not happy about it, I now feel obligated to tell that for testing purposes I did try this method. I chose only 1 company, messaged only 1 person and got $600 from it. It took me about 2 hours in total. Not planning to scale this because the method is too blackhat for me but anyways, I did learn from it and I got 550% ROI.
No one will sell you an easy money-making machine, there always will be an underwater stone about why the person is selling it, here with this method - as I said in my review there are two - its blackhat and technically is hard when you need to create a lot of social media accounts which is simply hard for a beginner but nothing that couldn't be learned over time.
I see methods sold on forums as very valuable learning material because even if it's outdated, you can apply your own twists and ideas to make them work. So when you buy them, lower your expectations and everything will be fine.