If the Cybersecurity and Privacy board was added any time in the last 3 months after the situation with julerz12, maybe a post there (such as one explaining and emphasizing that all users should be using Linux over Windows) may have prevented the OP from being hacked.
Highly unlikely that creating a board in forum would prevented anyone to get scammed.
I saw multiple posts explaining how to protect against stupid scams like this, and I have been advocating switching to Linux OS everywhere in forum.
After taking a quick look at Avirunes post history I can see that he is writing majority of his posts in Gambling section, so new Cybersecurity and Privacy board would have literally zero effect on him.
I am not against creating this board, and I would probably be active there, but let's try to be more realistic with your assumptions.