Gambling is not wrong but its also not the best thing you can do with your money of course, its enjoying and you can make some money with it so that is nice but that's all.
Overall gambling is not wrong, people that are gambling without money are wrong..
The people who are not gambling in the right way is making gambling wrong the way it is. There is no really problem in gambling.
If they are just going to be a responsible gambler that is going to make sense but is happening is different.
They are more prioritizing gambling rather than with some important things and making gambling as their main source.