I think this is not a good idea. Because when we do some promotion about gambling there are so many people that against about crypto will have a chance to hate and bash crypto more because it is connected to gambling and it may affect about crypto price and demand. But if there is something advestisement who can explain well about game or gambling I think this is possible.
This will depend on how they market they service, its ok to have a promotion like that because every gambling site need it so they can be more influential in the market and gambler will be aware that gambling site exist already. Promotion like signature campaign are the most effective on cryptogambling, I hope to see more gambling site do that.
Different ways of promoting projects will rely on how the marketing team will bring new approach or create something that will lead gamblers to pay attention, every business needs unique approach to make a good statement that will lead to invite more gamblers, making some new sets of ideas that will build interest and create noise all over the target places.