I think you are right, completely agree with, like we have discussed in another thread on this board or the gambling discussion board, many who came into gambling didn't do so on their own, majority started gambling because of the kind of money they saw another gambler win, or were told about it, and this made the person to decide to try out gambling since he or she will also like to win such an amount of money too.
And from my own personal experience, newbie gamblers are highly spirited, highly confident in believe that they would win, this pushes most of them to risking far more than they can afford to lose, it's only a matter of time, they will discover that winning in gambling is not as easy as they thought it was, and by this time, they come back to their sense that gambling aside being an activity that requires luck to profit, it also requires patients and open mindedness.
But this is if by this realization, such a person is not addicted yet, for the person who is addicted already, they may never come to this sense until help comes thier way.
A lot of times many of us are motivated by what we see or hear from others, and in my country, many gamblers have been birth through promotion and advertisements people who have won large amounts from gambling and this is what has inspired many to even try gambling in the first place, but much more also, we have to agree with the fact that, having such mindset toward gambling may likely lead to frustration and possible lose that may become uncontrollable since what motivates them in the first place is the success story of another person and without putting their luck into check also, sometimes most of this forks are motivated by they friends and close pals that always put they winning to the face of the newbie which will at the end get his attention and possible trials in the long run.
This is a typical example of people who do not have their own mind, they are easily cajoled with what to see, hear or are being influenced by. But those who have their own minds, let me call it a strong mind, will be reading and hearing all those and be smiling and moving away. They will only engage in such if they want to and not because of what the influencers or advertisers say. But really, the temptation of the marketers/influencers is much and could be so irresistible, especially if the company is running promos. There are some promos that personally motivate me, but the terms and conditions attached to them often send me back to my normal self. This is why I hardly gamble with promos/bonuses, I like to use my own money so that I play with my own freedom as well.
Above all in relation to your concluding part, if anyone has a bad mindset about gambling due to advertisements and the rest thinking they lured him into it, then the person is not mature. As an adult, you are free to decide maybe you agree or decline, no one is forcing anyone, and if you agree to gamble conditions, then it's all on you, which is why you have to know what you are signing for and then try your best to gamble and win. After all, some people are still winning in gambling.