I do not know if this site attracts scammers more than other similar sites. But there aren't to many similar sites - ClubCobra is often down, and offline, or broken for many functions. We run the same software and protections as any forum site, Zenforo, and many of these are far larger membership sites. We have the same versions of software and so on, use two factor verification of account, and much more.
What we do have which is a bit unique is a largely older clientele, and, one that generally has a lot of disposable income. Those two things can conspire to attract folks whose intentions might be nefarious. My wife is a professor at NC State and an Adjunct Professor at Duke, specializing in internet privacy and security. She routinely gives seminars to various groups on these topics and unfortunately it is fact that the older we are the more likely it is we can fall prey to scammers.
I'm afraid there are no solutions to keep scammers off the site. It's free to register and join, so any competent human can join up. And if they are interacting with people via email, PM, and so on, well, the sky is the limit on whatever crooked scheme they have devised.
We will do what we can to delete spam accounts, put barriers up to using the PM system, and so on but beyond that it's hard to do much more.
PS-none of the emails you listed for the scamming parties are in the GT40s.com database of users. The user name you posted,
edwwarddy
was and I just banned him. His log ins showed IP addresses in the Northeast, Kansas, England, and more all inside a few hours. Clearly he is using a VPN.