I doubt that it is the forums job to babysit you while you try to conduct trades with random strangers that are hidden under a pseudonym or while you invest/use/install random coins that end up being a pump and dump/virus/etc. If you get scammed online I could say that in most cases it is your own fault. I've been here for longer than 2 years and I have never had this problem. The forum's policy is what it is and it is okay for now.

Gambling is okay. 'Digital goods' != warez and stolen gift cards. Even if selling accounts was against the rules, there's no way to properly enforce that (e.g. trades via PM).