It's hard for me to get into it. It seems that you basically just work your ass off for 20 years, live like a pauper, then you can retire once your (arguably) best years are gone. I'd rather just work and spend my money and experience things during that time.
What also kind of bugged me with this article was that it sounds so crazy that these two people are doing this so young but then it's revealed they made a bunch of dosh off crypto which cheapens it a bit for me. This isn't just a road map one can follow, it implies some sort of luck ahead of time. I guess fortune favors the bold.