I'm pretty new to AM so I could be wrong, but doesn't it seem that all the people in the Biz Opp space are just promoting their friends products to their lists. It seems the same people just promoting within the same network. Most of the content is all the same, making money by teaching people how to make money . I don't know just seems like one giant circle with tons of rehashed PLR products. There's only so many ways you can retell the same story about how to make money with facebook ads.
There are some genuinely extremely high-quality resources out there on Making Money Online (like STM!), but there are also a lot of less valuable (or negatively valuable) resources.
It's certainly worth being very careful with what you buy.
Overall it is a very shady vertical.
There are definitely high quality products in there, but most of the stuff are pretty worthless at best, and unscrupulously exploitative of vulnerable people at worst.