Op, here is an open forum, anyone can choose to be anything. A user could have an account for business and services and as well have another account for scamming. No one actually knows who is behind the screen. About scammers, I am no longer afraid of them since I discovered this forum. This forum will make you to be smart, and smarter than scammers. So, it will sound odd that someone is a member of this forum and still fall for cheap scams.
I know some scammers are intelligent people
I don't think they are intelligent. An intelligent person will never live a life of a scammer. He will find a way to bring bread and butter in a legitimate way so that the business can sustain for longer term and make a positive impact for him and his family.
Maybe we can say that scammers are negatively intelligent or they are just lazy intelligent guys who could not harness their potentials but resorted to scamming.