Yeah I totally feel what you're saying dude, it DOES seem nuts.
First off, there's probably like 1 million actively playing accounts at most. Possibly less - if you told me it was 500,000 recently active players, I'd believe that too.
Secondly, it seems everyone except an elite chosen few are really bad at this game. Like, everyone except a couple thousand people who have played a lot/have seriously good genes/or both all suck at this game.
We're similar in rank. Amongst a large number of people who (almost) all suck at this game, we possibly suck slightly less than average.
Not that that actually means much.
Three - this game has a seriously big ass learning curve, and I don't know about you, but the only reason why I got past my first day of playing was because I was stubborn - "How could I get stuck on a game's NORMAL difficulty? This is absurd! I can't believe this, I'm going to keep on going until I beat this stupid level!"
... I didn't actually start to have fun, real fun, until about 500-1000 plays in. My experience might not be representative, but I'd say most people have started an account, played a little bit of the game, utterly sucked at it, then quit in disgust to never come back.
And that's not because the game is bad or anything, it's just different from absolutely anything else most people have played.