The point is that "escape" in this case means not having to work to American Capitalism levels, not escaping working entirely. Retirement in the FIRE sense does not imply in all cases spending every day by the pool doing nothing, and even in the AmCap sense, most who retire and tend to live longer and (self-reportedly) happier, have some work that they are doing, but more along the lines of what even a medieval serf would have enjoyed to the tune of like 15 hours a week.

ETA: often this work is volunteerism, which does not have a capital incentive in the individual case here.