I don't see what your ultimate life goals - or even having any - has to do with work/life advice. If you spend half your time working, and half your time on a tropical beach with a margarita, how is that a bad thing?
I grew up in Florida and Mexico, so i'm aware that too much of the same thing gets old - which is why I spend up to a week on a beach at a time, and work the rest of the time in a big city. The dichotomy is blissful.
But even the idea that it can get old is very dependent on the person - some people's life goals are to surf, eat ceviche, and drink cerveza while fishing with friends. They may not get sick of it, while you or I might. Their work/life balance might be giving diving lessons in the spring in Trinidad and working a WWOOF off-season, interspersed with consulting work (a friend of mine). The dude in the article likes beaches and tropical drinks. As long as they can identify how to achieve a healthy balance, doesn't matter what it is.
I try to spend good portions of each day several months a year on various beaches in Maui. I can't think of many things I'd prefer than playing and swimming with my family at the beach. When I was single, a beach with a nice bar or bars nearby would have been a paradise.