Good opportunities are not "sold" that way with huge marketing language.
It's done to bait the vulnerable. I've seen lots of hype documents like that link has... Within reading 4-5 sentences I knew it was garbage.
Any good think that will make a lot of money people keep it a secret. The best opportunities are the ones you discover on your own, that no one is talking about.
If someone isn't pumping or pushing it, you have a chance to make money.
If someone is pumping or pushing it in that way (with massive marketing language) they want you to buy in, so they can get out. :)