maybe the times are really different now, there are really many young people who gamble to make money because not all young people have been left with a good life and like you said, they can't be stopped because it's easy to learn now or know the different styles of gambling, when you have a phone, you can immediately access everything so it's hard to stop others but of course, so that it doesn't get worse in the future, it would really be better for them to get proper guidance in the older than them.
Exactly if you see some those young boys on the street and they narrate their stories to you, you will pity them and if they are gambling to survive every week or month and they are not disturbing other people on the streets and not stealing and only gambling then let them gamble to feed. According to some group nof young boys I met in 2020, they said they thank God for gambling because it provide their daily breads. But frankly speaking it is not good for children to gamble because they are not emotionally feeling strong to defend themselves when they is unusual lose and any other gambling dysfunctional issues arises. Gambling from 18+ is always a nice idea because the mind has matured at the time to face some situations on ground.
You are right mate,every man's purpose on why he or she Gambles is to make profit,and so I don't think that anybody who is above the age of 18 is still young.The world is bad,and especially in most countries who have bad economy,they find it very difficult to survive,therefore,their only means of survival is through gambling and other related stuffs.However,the only ones I can have issues with as you said are the ones who go around stealing people's properties,selling those properties to gamble,they are the ones who make the people in the society to feel gambling is bad too.