I would not read too much into it. I know a surprising number of nominally retired people with plenty of money who are recreationally employed because they enjoy it, often taking those kinds of jobs because it has such low commitment for them. It is a very social activity. I’ve talked to Uber drivers that were wealthy retirees who drove a couple hours per day just to talk to diverse and interesting people, it is an enjoyable routine for them.

Some of my teachers in high school were retired industry executives who taught for the love of it. At least in the US, “retirement” is often about choosing to be a productive and social member of the community without optimizing for the paycheck. It gives them a sense of purpose. I can’t speak for retirement in other cultures but in the US many retirees take an enormous amount of pride in generating value to society even if it doesn’t generate income. My grandparents and great-grandparents were all like this, and they loved it. Sometimes it generated income but they didn’t need it.

I could easily see myself doing the same thing as they did.