I've spent about 7 years being "digital nomad" and while I've never read the book I've met many very successful "nomad" entrepreneurs with 7-8 figure businesses

I've spent about 7 years being "digital nomad" and while I've never read the book I've met many very successful "nomad" entrepreneurs with 7-8 figure businesses (usually also physically fit) who credited their journey and even foundation of their business to this book. Maybe anecdotal or perhaps they took away something others fail to spot in it?