People asked Cooller on his stream why he doesn't play QC anymore. Here is his reply (on Russian):

"I won't play Quake until I get a clear understanding what tourneys and when they are going to happen. Over wise it is just wasting of my time.

If NaVi is going to drop me out, it is not a problem, I do understand this. I think NaVi doesn't need Quake too if there is no regular tournaments. That's simple as it is.

Why should I practice it? What's the point? Wasting of the time? For what? If there are going to be tournaments - I'll start practicing. If there are not going to be tournaments - I won't train, I won't play Quake."