That's what I read of the game. And yet, when I check http://store.steampowered.com/stats/, you will see that today's peak, or any other day's peak comes nowhere near the implied 1,000,000 playerbase this game has. Not even half, nor even half of half of a mil.
So where are they?
Rage crafter would have more accounts I guess. One could have 10 accounts so it's not really a good estimation to say there are 1 mil active players. Also, if you see spiral knights achievement on steam database, most people give up the game before they even reach to haven.