Jesus Himself said that relatively few people would get into heaven, so it's not like this is some new concept.
Which begs the question further... when is his quota met? In order to reach the threshold of "relatively few", billions of other misfortunate slobs are in for a rude awakening.
Where does your idea of a "quota" come from?
for lack of a better term.. Call it what you will: quota, limit, tally, whatever. You said Jesus knows only a few will enter heaven. Ok, how many is this few? The question is how many people will be born and perish before God is satisfied enough to stop the show? This is rhetorical of course. If he's willing to lose 1000 souls to eternal damnation in order to get 45 more into heaven, then that's great. Like I said before, it's his BBQ. But the question remains.
I still don't see where you get the idea of a quota.
He makes the assumption that more people who are being born will end up in hell than in heaven. This is a biblically founded assumption. So, for every 4 kids being born right now, 3 will likely go to hell (his numbers, pure estimate, adjust it however you like). God can end the world, and the process of birth whenever he wants. He can usher in true "End of Days". He can stop it all, call it quits, and usher in heaven, whenever he wants.
Jayrock assumes, or concludes, that he's keeping things going to harvest more souls, to allow more people to come to him, so that there will be more in heaven when he ends the earth. This may or may not be 100% accurate, but the general idea is valid.
The point is, for every 4 births, 75% of them are going to hell. So God is allowing the world to continue at such a rate that the majority of people being born now are going to hell. Why wouldn't he just cut it off now, cut it off hundreds of years ago, to prevent more people from being subjected to hell? Why allow people to continue to be born, only to "reap" the low percentage of actual christians?
If he cared about mankind and loved us as much as he says he does, wouldn't it make sense that he'd want to prevent more souls from going to hell just by calling it off?
Most people want the US to pull out of iraq because we're losing lots of people and causing problems there. Imagine if 3 out of every 4 troops we sent over there were brutally tortured. Wouldn't there be a huge call just to stop, and come back? Well, if God were in charge, he'd continue. Why? That's the point we're discussing here.