The people that make it work usually take RE to mean “recreationally employed”. They aren’t sitting on a beach. They have a challenging project they are personally obsessed with that also generates income, but the income is largely just a way to keep score for them.
> recreationally employed
It is one of my greatest hope for everyone to be able to achieve this. It would shift the workplace dynamic so much that employers would have to work harder (beyond pizza parties) to retain employees since no one would blink an eye at the thought of resigning on the spot.