The article's point was to say that these grind games are not actually adding economic value, because it required existing wealth to come into the system to pay out the grind (and the company sucks out some transaction fees).
The game itself may possibly be fun for those that pay (instead of grind), but that's hard to judge.
To make a dig like this and then not even acknowledge it in the content is exactly what I would expect from a white American who has no concept of how certain trends impact anyone other than themselves.