Gaming and nudge theory[1] in general is an interesting concept that I expect to have increased discussion in the coming years. On one hand, you have instances like this article where gamification is viewed in a positive light; on the other hand, companies like Robinhood or loot boxes are currently being scrutinized for utilizing gamification elements.
This isn't a post for or against them, but rather acknowledging the ethical concerns and how we determine what is "okay" for gamification. If we use these methods for health, education, etc., it is presented under the guise of "helping" an individual receive the respective benefits. BUT, one will likely be able to argue the same aspects for things like personal finance and video games.