Took a look at the Nexon "careers" page

so is there a complex somewhere filled with low class workers who are GMs for multiple games at one time?

Something like that. They usually do testing work, game certification etc as well. We wouldn't do multiple games at once, but teams were constantly changing.

I can't put myself in their shoes, sorry. I always try to do a kick-ass job.
I'm going to assume the answer you're looking for is "complain and ask if the quota can be lowered".

When you're being paid less than your skill level, it's quite discouraging. But there is no incentive to let you learn the game, since you won't be there long. Example: I'm hiring you as a GM for Hello Kitty Online, You'll be working this game for a month, you must find x amount of people breaking rules and answer x amount of tickets a day. Once you're there you'll ban anything that looks suspicious, and ask questions later, since more than likely by the time the ban needs to be reviewed you'll be long gone.

And it's not that people would complain for lower quotas, it's even if you tried to do a kick-ass job and spend more time actually solving the problem, you would be reprimanded since you could have done twice as many "half-assed" solutions.

The environment isn't great, and it's usually management's fault not so much the labor (though there is some of that too).