Top notch statement of facts regarding privacy and anonymity on forums vs social media platforms. This is one of the issues that I promote to people when they consider joining; THEY are in control of what is and is not seen.
This is why I prefer forums to any other kind of social interaction between people; the opportunities of flexibility are almost endless with forums, whereas social media is rigid and contrived.
I believe that this is an important and relevant statement in a world where privacy almost often comes with a price, but not on forums; it's been there since day one and remains today - it's a shame that more people out there do not realise and appreciate this simple fact.
Great article and one which I will happily link to and promote from my own site. Thanks Matt, job done!