I noticed a lot of websites have become hotspots for spamming. I think that's why other forums have transitioned to social media platforms to avoid spam problems.
Well... I never seen elsewhere so much SPAM and especially SCAM, like on nowadays social platform networks :-)
In Internet, you couldn't avoid spam at all, and it's just a question of instant moderation to keep the forums clean. On forums, spam means just posting a link to some doubtful website. And everyone decides if to click this web-link or not (mostly it's not clicked at all).
But if some forum could be an area full of professionals of a dedicated subject, despite it could be small area — there are less chances that someone becomes scammed. On social networks it's much easier. I don't know the reason of why the majority of their members decide that if someone shows up some «real» name and surname, then it means this person could be trusted. As I've noticed, there could be more trust to anonymous-to-fake accounts than real persons :-)