I listened to this today. It was OK, but it spent almost all its runtime on the extremes: the dude who got super-rich with a smash hit app that made $250,000 a month, and the woman who saved money by becoming a truck driver and sleeping in the truck in between freight runs.
I guess the basic story of "ordinary middle-class person reaches financial independence over 10-15 years by living frugally and cutting out unnecessary spending" wouldn't make for interesting material for a podcast. But it's the most common, and the most reproducible, kind of FIRE story.