That is exactly the opposite of what the article suggests.

> Both partners have equal access to it, and both partners will continue to receive the same monthly allocation for fun money no matter how much each person makes.

It definitely depends on the couple. Currently, I am working and my spouse is not. During our most recent talk about budgeting a few months ago, we took this into account when figuring out appropriate amounts of fun money for each of us. Specifically, since I am out of the office/house for lunch/dinner less often, and my hobbies (programming/baking) are inexpensive, I neither need nor want as much fun money, and I would rather they have it available instead.