I don't want to hijack the thread and start answering all the replies when OP should but...
How much can one make with these strategies if they put in the work?
I don't think OPs claims of a few thousand a month are outrageous but I also don't think they look easy. I see it as a scalable side hustle. I have only read and absorbed the ebook. Not done any work yet. I just read it last night.
Certainly scalable because there are a lot of niches and a lot of places to find traffic. If you find 3 niches and 5 sources of traffic then that's 15 potential avenues. The more niches you pursue and the more traffic sources you exploit the more it scales. But you can't start out that way.
You can't just spam away and expect to be successful. It is affiliate marketing. Learn your market, learn what they are looking for, learn how to reach them, learn what works and what doesn't.
In affiliate marketing it isn't the product, it's the target market.
To use the example in my review, here is no "Lose 10 lbs for your wedding" product. But there are thousands of weight loss affiliate products. Find a good one and then get targeted traffic from your desperate pre-wedding buyers. Then scale to "lose weight for your graduation", "lose weight after pregnancy", "lose weight to look younger", etc. All of those are small segments of targeted buyers that you will send to the same weight loss product.
Maybe. It isn't obvious to me how it could be automated as you need to create content and appeal to the desperation of your potential buyers. Running a bot that drops affiliate links all over the place with generic snippets of comments for example is not going to work.
My answers are getting long-winded so I don't want to take over this sales thread but all principles of Affiliate Marketing and Niche Targeting apply. This is not a magic secret. He uses case studies and examples to give great ideas on how to dig into an evergreen niche and find desperate segments.
It is not a spoon-fed blueprint.
If you have no experience in Affiliate Marketing you are going to have to work hard to learn the fundamentals as this ebook is not "An Introduction to Affiliate Marketing".
If you have some experience but have a little trouble with things like "How do I find my own twist", "What do I do now" or "Do I have a good mindset" then you are going to find inspiration and some gems.
If you are very experienced and already generating good affiliate money online then you will know most of this. But case studies are always interesting no matter how successful you are. You may pick up a few twists or "aha" moments and maybe find a few new ideas.