I agree that ico should not be in beginners &help. However ico are not the only possible scam/phishing possibilities. There are different services which are discussed in beginners &help board: vanity addresses, mixers, exchanges, wallets, to name a few.
All those services could possibly be used by a scammer to steal money from beginners.
Okay, so it's pretty obvious that I care for non bias discussion, and will try, and protect that as much as possible. However, I personally don't receive many reports for the Beginners, and help section, and honestly don't frequent it too often. Maybe, I'll have to dip my toes in more regularly. However, the things that you have mentioned there I would tend to argue that most of those belong elsewhere if they are discussing a service. Discussion such as Mixers, exchanges, and wallets belong in Service discussion, exchanges, and Bitcoin technical support/wallet child section retrospectively. Vanity addresses really does depend on the type of discussion being had. If they are generic questions then Beginners & Help is more often than not the best place. However, usually these topics could fit elsewhere for a better representation. What Beginners & Help is good for is "basic" questions such as "What is a physical Bitcoin" or "what is mining?" etc.
A newbie could ask for a Wallet and a known scammer could just post a link to a phishing wallet address and scam him.
Okay, so I would prefer to implement a different solution to try, and protect bias discussion. What I would recommend in these instances is including a sticky for newbie safety (which has already been done) and yeah I am aware that the majority of users on the forum will outright ignore sticky threads. But, what if we were to implement a warning when clicking on a link "You are leaving Bitcointalk. This link may be unsafe, please confirm its safe before proceeding" something like that. Many sites do this, and I'm not sure if it even works, honestly. However, I like the idea of protecting Bitcoin users. But, they also need to do their own research, and learn. If we put all the warnings in place to prevent scamming from happening while minimally impacting other parts of the forum I would prefer to take that approach. I'm not totally against having trust ratings visible, honestly. However, I think I would prefer not too, because of the impact on bias. Basically, we'll see a lot of trusted members having their words taken as the be all and end all when that is rarely the case.