I mean, I can tell you he's been playing CS pretty regularly. Players obviously take breaks because of things like burnout, I had teammates who did that all the time and we played far less than the pros do now.
I can't say I'd blame Autimatic for being tired of the game, he's been playing it since he was like 10, and he's been in and out of the top tier since Source. The thing is, unless you're taking prolonged breaks, a lot of that knowledge persists. Usually what you lose isn't the gamesense, or awareness, but more just aim/movement/positioning.
Either way, he's played a fair amount of CS recently. It's not 40 hours a week or anything, but it's certainly enough.