What is a breeding population??

In case someone stumbles upon this in the future, I want to preserve the original comment they replied to:

> This is a mistake. Housing restrictions are what keep breeding populations from overrunning the world. Berkeley becomes Mumbai. It will be ruined, and within a generation of breeding, housing costs will be high yet again. So there is no permanent fix, only the uglification of beautiful places, and the environmental harm of more humans overrunning the Earth. Building more housing is like building more highways. It increases demand.

Any population which can grow unchecked.

(Implies the lesser human who think having kids isn’t a low key evil for killing the earth)