Still investing should be done along with work side by side but it does not necessarily mean that everyone can retire early, most of them can never do this.
I can believe if people do actually quit their jobs but I don't believe they will retire and stop working entirely. They can start a business that won't take most of their time. Most people still find ways to make more money. Even a man worth over $200 billion hasn't retired early.
I don't think it's smart to spend your money without putting it into things that will yield more money for you.
What makes sense to me working as,little possible and having investments, but just not working at all and having no investments at all at an early age is what I don't understand.