It's interesting to see the author of some famous books like Matering Bitcoin, Mastering Lightning Network, Mastering Ethereum, The Internet of money, namely Andreas Antonopoulos, has an account here. He was a forum moderator too.
Indeed, it's quite interesting to know the person behind those amazing books was once an active user of this forum, and based on one of his last posts, it appears that the reason behind his gradual disappearance was how this forum was constructed:
I sent him some merit points and hope he comes back.
Our best bet would probably be Epochtalk
[if there'll ever be one] Also, making decisions in the forum has become less rapid than in the past.
That's the norm when there's more at stake.