Here is the real answer. Bitcointalk is now quite barely a bitcoin forum. People are using it as a tool to earn some quick bucks, as a juicy source (it terms of SEO) to get a backlink from, as a good way to earn people's confidence and scam, etc. I don't mean people who joined the forum with a willing to contribute have left, they are still here. But the shitposters outpopulated them.