Expert like this aren't basic people, some of them are highly intelligent people but chose to use their knowledge for what is evil other than been productive. If you can sit down and be able to replicate a website word by word, html by html, css by css, that knowledge can fetch you more gigs or even become a permanent developer for casino, services are are always appreciated, this will earn you more reputation and help build career but they prefer quick money instead.

How users get affected is upto how they are oriented, there are casino scams but they are very limited most often limited to how big the casino is at the moment. More users, new sweet promo, more users and likely more victims, average casino doesn't experience scams that much.