I made a article about this on my website but I don’t want to self advertise but the way I see it is Facebook and Facebook Groups or Discord are for simple things, Search engines barely index it’s content.
But forums & blogs are for meanful deep discussions, forums are also more organised, this feed approach is just addictive but it’s messy when trying to find posts.
I have noticed it’s between aged between 23 - 60ish that are more prone to use forums I’ve noticed but we are sane because forums are still amazing 😀