Not really a cope, I thought big collabs did poorly in individual CCV since you're spreading viewers with a lot of overlap over lots of streams.
It appears either I was mistaken, or even taking that into account they're still doing way worse than they used to at NijiEN.
I don't really watch NijiEN anymore. I rarely check out Pomu, Rosemi or Selen. Nina was the one I ended up watching the most. I'm more of a Holo watcher (+ Tenma from Phase)