Apparently not.
http://steamcharts.com/app/730#1y
It was growing steadily until August 2015, then it sort of flattened out with ups and downs, and has peaked around the same level twice since, but it looks to be in gentle decline now. Don't imagine it's going anywhere soon, though.
The weirdest thing about CS:GO, though, is I've literally never met ANYONE IRL who plays is. Not a single one. And in none of the forums I visit is there anyone who is a current player - plenty of "Oh yeah I used to play this", but... Whereas CoD, BF, OW, PUBG, etc. - plenty of people who have played, still play, etc. etc. IRL and on forums.
It's like, whatever the demographic for CS:GO is, it must have almost no crossover with my demographic, despite being PC gamers.