I think the threads died when our beloved Granny passed.
I think posting volume is a fraction of those days
It’s just an evolution of things .....the chronology of forums is a new “science “
We’ve lost prolific posters to death....we’re an aging forum
All forums age. 4chan is now probably mid 20s
Well when I joined here it was around 40 or so I’d guess median age
Then there are those who simply tire of it and leave
Then you have the purged....another matter and we’ve sure had some vitriol here over that in the hey day