One thing to consider is that sitting at a computer and logging on to a traditional "forum," is not how the the youth are participating on the web. It's social media destinations through their phones. Those areas are up while the forums are down. Facebook, Instagram, and even Youtube are all faster to access in your hand. More sites are supporting "mobile" accessibility.
If you want to know where the "desktop" interneters are then just head to the comments sections of the "news" sites and you'll see thousands upon thousands of people participating in the act of behaving badly. Doesn't matter what the topic is - People like to spread negativity.
This is the only internet forum I participate in because, in general, I think folks show a lot of class and restraint here. Yup, some MIA folks here for sure. Black Wolf, Scooter Bob, Cyrus... lots of Enfield knowledge in those brains.