Gambling can affect self-esteem, relationship's, physical and mental health,work performance and social life. It can harm not only the person who gambles but also the family, friends, workplaces and communities.
Maybe you should just be specific. I am a gambler, and I don’t have any effect on my family members or community. The only people from whom I know that their gambling activities always affect them or the people close to them are the addicted gamblers, they are the ones that do crazy things just because they want to gamble, and their activities are affecting people negatively. Addicted gamblers activities are the ones that make society have a negative mindset about gambling, but I don’t see anything bad about gambling, just that we should try not to be addicted to it.
Exactly, and yes he should have explained in more detail about who or what type of gambler will experience such adverse effects, but it doesn't matter because at a glance we can already see or conclude that it is the impact that will be experienced by gamblers who have entered the addiction phase in their gambling activities as you said. This means that there is nothing wrong with gambling, whoever you are as long as you have some money to gamble then you are allowed, but for the problem of its impact it depends on how you or whoever treats the gambling activity, if for example someone treats gambling in the wrong way as is done by gamblers who are addicted then yes of course the impact can definitely be very bad and it can destroy various aspects of life.
But if we gamble based on the right understanding along with the right way that is far from excessive then surely we will not experience significant adverse effects, but maybe we only lose a small amount but do not affect various other aspects of our lives, the point is that it depends on how you address and treat the activity.