The younger generation will be easily tempted to gamble, which is almost similar to playing games, making them forget the time to stop. Perhaps it is a concern for some parties if there is a curriculum about gambling lessons so that gambling does not need to be taught in schools.
The thing about education is helping young people to be aware of what gambling is and why it should be done with care and with a planned budget. If you are afraid that teaching the youth about gambling could lead them to gambling more, then you should be aware that there are thousands or even hundred of thousands of teens and children who gamble and do not even know.
Take a look at how the gaming industry has devolved this latest years, microtransactions and loot boxes in game-as-a-service products. A parent could easily buy a game to their toddler and introducing him/her to some practices which will likely make him/her prone to suffer gambling addiction in the future. We should not be afraid of education.