I know what you're talking about, OP, except it's been that way for at least two years, and I'm being conservative.
The last remnants of the original culture died a painful death when /jp/ went to shit.
It was very hard to find something to fill the void. In fact, I still don't think I've found anything to this day. Tohno-chan and other niche boards help a bit, but they're far from vibrant enough.
There is no therapy, only emptiness.